Giant Resistivity Anomaly in ZrTe5, S. Okada, T. Sambongi, M. Ido, J. Phys. Soc. Japan, 49(2) (1980) 839-840.
Negative Evidence for Charge/Spin Density Wave in ZrTe5, S. Okada, T. Sambongi, M. Ido, Y. Tazuke, R. Aoki, O. Fujita, J. Phys. Soc. Japan, 51(2) (1982) 460-467.
Conduction Properties of ZrTe3, S. Takahashi, T. Sambongi, S. Okada, J. Phys. Colloq., 44 (1983) C3 1733-1736.
A New Transition-metal Penta-chalcogenide Cathode for Secondary Lithium Cells, S. Okada, H. Ohtsuka, T. Okada, J. Electrochem. Soc., 131(11) (1984) 2732-2733.
Electrochemical Behavior of Amorphous V2O5 (-P2O5) Cathode for Lithium Secondary Batteries, Y. Sakurai, S. Okada, J. Yamaki, T. Okada, J. Power Sources, 20 (1987)173-177.
Lithium Cycling Behavior in Lithium Added Amorphous V2O5, S. Okada, H. Ohtsuka, Y. Sakurai, J. Yamaki, Progress in Batteries & Solar Cells, 7(44) (1988) 367-370.
NMR Study on the Li Diffusion in a Cathode Material of Amorphous Vanadium Pentoxide-5 Mol% Phosphorus Pentoxide, T. Asai, S. Sugimoto, S. Kawai, S. Okada, J. Yamaki, Mat. Res. Bull., 24(1) (1989) 75-82.
Intercalation Mechanism in Lithium/Iron-Phthalocyanine Cells, S. Okada, J. Yamaki, T. Okada, J. Electrochem. Soc., 136(2) (1989) 340-344.
Effect of Particle Size on Iron-Phthalocyanine Cathodes in Secondary lithium Cells, S. Okada, J. Yamaki, J. Electrochem. Soc., 136(9) (1989) 2437-2440.
Solid State Battery with Li2O-V2O5-SiO2 Solid Electrolyte Thin Film, H. Ohtsuka, S. Okada, J. Yamaki, Solid State Ionics, 40/41 (1990) 964-966.
Electrochemical Behavior of Amorphous in V2O5-TeO2 Lithium Cells, T. Hirai, S. Okada, J. Yamaki, J. Electrochem. Soc., 136(11) (1990) 3163-3169.
Characterization and Cathode Performance of Li1-xNi1+xO2 Prepared with the Excess Lithium Method, H. Arai, S. Okada, H. Ohtsuka, M. Ichimura, J. Yamaki, Solid State Ionics, 80 (1995) 261-269.
Study of Li3-xMxN (M:Co, Ni or Cu) System for Use as Anode Material in Lithium Rechargeable Cells, T. Shodai, S. Okada, S. Tobishima, J. Yamaki, Solid State Ionics, 86-88 (1996) 785-789.
Effects of Surface State of Plastics on Adhesive Strength in Electroless Plating, S. Sugihara, S. Okada, H. Ohtsuka, J. Yamaki, J. Appl. Polym. Sci., 59 (1996) 1751-1758.
Synthesis, Redox Potential Evaluation and Electrochemical Characteristics of NASICON-related-3D Framework Compounds, K. S. Nanjundaswamy, A. K. Padhi, J. B. Goodenough, S. Okada, H. Ohtsuka, H. Arai, J. Yamaki, Solid State Ionics, 92 (1996) 1-10.
Valence Analysis of Transition Metal Ions in Spinel LiMnMO4 (M = Ti, Cr, Mn, Co) by Electron Energy Loss Spectroscopy, S. Suzuki, M. Tomita, S. Okada, H. Arai, J. Phys. Chem. Solids, 57 (1996) 1851-1856.
Reversibility of LiNiO2 Cathode, H. Arai, S. Okada, Y. Sakurai, J. Yamaki, Solid State Ionics, 95(3-4) (1997) 275-282.
Cation Valences and Unoccupied State of LiMnVO4 Studied by Electron Energy Loss Spectroscopy, S. Suzuki, M. Tomita, S. Okada, H. Arai, J. Phys. Chem. Solids, 58(5) (1997) 799-805.
Effect of Structure on the Fe3+/Fe2+ Redox Couple in Iron Phosphate, A. K. Padhi, K. S. Nanjundaswamy, C. Masquelier, S. Okada, J. B. Goodenough, J. Electrochem. Soc., 144(5) (1997) 1609-1613.
Plating for Generation in the Forming of Printed Circuits by Additive Method, S. Sugihara, A. Iwasawa, K. Onose, A. Tanaka, H. Arai, T. Shodai, S. Okada, H. Ohtsuka, J. Yamaki, J. Appl. Electrochem., 27 (1997) 1111-1117.
Electrochemical and Thermal Behavior of LiNi1-zMzO2 (M = Co, Mn, Ti), H. Arai, S. Okada, J. Yamaki, J. Electrochem. Soc., 144(9) (1997) 3117-3125.
Transition Metal Oxides for High Voltage Lithium Batteries, H. Arai, S. Okada, Y. Sakurai, J. Yamaki, Progress in Batteries and Battery Materials, 16 (1997) 296-301.
Characteristics of 3D Framework Cathodes with (XO4)n-Polyanions, S. Okada, H. Arai, K. Asakura, Y. Sakurai, J. Yamaki, K. S. Nanjundaswamy, A. K. Padhi, C. Masquelier, J. B. Goodenough, Progress in Batteries and Battery Materials, 16 (1997) 302-308.
Anode Performance of a New Layered Nitride Li3-xCoxN (x = 0.2 - 0.6), T. Shodai, S. Okada, S. Tobishima, J. Yamaki, J. Power Sources, 68 (1997) 515-518.
Low Temperature Synthesis and Electrochemical Characteristics of LiFeO2 Cathode, Y. Sakurai, H. Arai, S. Okada, J. Yamaki, J. Power Sources, 68 (1997) 711-715.
Cathode Performance and Voltage Estimation of Metal Trihalides, H. Arai, S. Okada, Y. Sakurai, J. Yamaki, J. Power Sources, 68 (1997) 716-719.
Electrochemical and Structual Study of Li2CuO2, LiCuO2 and NaCuO2, H. Arai, S. Okada, Y. Sakurai, J. Yamaki, Solid State Ionics, 106(1-2) (1998) 45-53.
Electrochemical Properties of Li2PtO3, K. Asakura, H. Arai, S. Okada, S. Tobishima, J. Yamaki, Electrochemistry, 66(2) (1998) 221-222.
Thermal Behavior of Li1-yNiO2 and the Decomposition Mechanism, H. Arai, S. Okada, Y. Sakurai, J. Yamaki, Solid State Ionics, 109(3-4) (1998) 295-302.
Characteristics of NASICON-type Cathodes for Lithium Batteries, S. Okada, T. Takada, M. Egashira, J. Yamaki, Recent Res. Devel. Electro.Anal. Chem., 1 (1999) 1-9.
Cathode Characteristics of Layered Rocksalt Oxide, Li2PtO3, S. Okada, J. Yamaki, K. Asakura, H. Ohtsuka, H. Arai, S. Tobishima, Y. Sakurai, Electrochim. Acta, 45 (1999) 329-334.
Cathode Properties of Layered Structure Li2PtO3, K. Asakura, S. Okada, H. Arai, S. Tobishima, Y. Sakurai, J. Power Sources, 81-82 (1999) 388-392.
Potential and Thermodynamics of Graphite Anode in Li-ion Cells, J. Yamaki, M. Egashira, S. Okada, J. Electrochem. Soc., 147(2) (2000) 460-465.
Possibility of Voltage Perdection from the Coulonb Potential Created by the Atoms of a Cathode Active Metal for a Li Ion Cells, J. Yamaki, M. Egashira, S. Okada, J. Power Sources, 90(1) (2000) 116-125.
Measurement of the Electrochemical Oxidation of Organic Electrolytes Used in Lithium Batteries by Microelectrode, M. Egashira, H. Takahashi, S. Okada, J. Yamaki, J. Power Sources, 92 (2001). 267-271.
The Effect of Cation Species on the Anodic Oxidation of Organic Solvent Electrolytes, M. Egashira, S. Okada, J. Yamaki, Electrochemistry, 69(6) (2001) 455-457.
Voltage Prediction from Coulomb Potential Created by Atoms of Spinel LiMn2O4 Cathode Active Material for Li Ion Cells, J. Yamaki, M. Egashira, S. Okada, J. Power Sources, 97-98 (2001) 349-353.
Cathode Properties of LiMPO4 for Lithium Secondary Batteries, S. Okada, S. Sawa, M. Egashira, J. Yamaki, M. Tabuchi, H. Kageyama, T. Konishi, A. Yoshino, J. Power Sources, 97-98 (2001) 430-432.
Thermodynamics and Phase Separation of Lithium Intercalation Materials Used in Lithium Ion Cells, J. Yamaki, M. Egashira, S. Okada, Electrochemistry, 69(9) (2001) 664-669.
Thermal Studies of Fluorinated Ester as a Novel Candidate for Electrolyte Solvent of Lithium Metal Anode Rechargeable Cells, J. Yamaki, I. Yamazaki, M. Egashira, S. Okada, J. Power Sources, 102 (2001) 288-293.
Phase Separation of Intercalation Electrode, J. Yamaki, M. Egashira, S. Okada, Ionics, 8 (2002) 53-61.
Thermal Stability of Alkyl Carbonate Mixed-solvent Electrolytes for lithium Ion Cells, T. Kawamura, A. Kimura, M. Egashira, S. Okada, J. Yamaki, J. Power Sources, 104 (2002) 260-264.
Thermal Stability of LixCoO2 Cathode for Lithium-ion Battery, Y. Baba, S. Okada, J. Yamaki, Solid State Ionics, 148 (2002) 311-316.
Cathode Properties of Pyrophosphates for Rechargeable Lithium Batteries, Y. Uebo, S. Okada, M. Egashira, J. Yamaki, Solid State Ionics, 148 (2002) 323-328.
The Effect of the Coexistence of Anion Species in Imidazolium Cation-based Molten Salt Systems, M. Egashira, S. Okada, J. Yamaki, Solid State Ionics, 148 (2002) 457-461.
Mixed Solvent Electrolytes Containing Fluorinated Carboxylic Acid Esters to Improve the Thermal Stability of Lithium Metal Anode Cells, K. Sato, I. Yamazaki, S. Okada, J. Yamaki, Solid State Ionics, 148 (2002) 463-466.
Properties of Containing Sn Nanoperticles Activated Carbon Fiber for a Nagative Electrode in Lithium Batteries, M. Egashira, H. Takatsuji, S. Okada, J. Yamaki, J. Power Sources, 107 (2002) 56-60.
Electrochemical Insertion of Lithium and Sodium into (MoO2)2P2O7, Y. Uebo, S. Okada, J. Yamaki, J. Power Sources, 115 (2003) 119-124.
Electrochemical Alkali Metal Intercalation into the 3D Framework of MP2O7 (M = Mo, W), Y. Uebo, S. Okada, J. Yamaki, Electrochemistry, 71(5) (2003) 308-312.
Anode Properties of Calcite-type MBO3 (M:V, Fe), S. Okada, T. Tonuma, Y. Uebo, J. Yamaki, J. Power Sources, 119-121 (2003) 621-625.
LiFePO4 Storage at Room and Elevated Temperatures, N. Iltchev, Y. Chen, S. Okada, J. Yamaki, J. Power Sources, 119-121 (2003) 749-754.
Thermal Stability of Electrolytes with LixCoO2 Cathode or Lithiated Carbon Anode, J. Yamaki, Y. Baba, N. Katayama, H. Takatsuji, M. Egashira, S. Okada, J. Power Sources, 119-121 (2003) 789-793.
On the Cycle Behavior of Various Graphitic Negative Electrodes in a Propylene Carbonate-based Electrolyte for Lithium Ion Batteries, M. Egashira, S. Okada, J. Yamaki, J. Power Sources, 124 (2003) 237-240.
Properties of Carbon Anodes and Thermal Stability in LiPF6/Methyl Difluoroacetate Electrolyte, M. Ihara, B. -T. Hang, K. Sato, M. Egashira, S. Okada, J. Yamaki, J. Electrochem. Soc., 150 (2003) A1476-1483.
The Effect of Additives in Room Temperature Molten Salt-based Lithium Battery Electrolytes, M. Egashira, T. Kiyabu, I. Watanabe, S. Okada, J. Yamaki, Electrochemistry,71(12) (2003) 1114-1116.
Charge-discharge Mechanism of LiCoPO4 Cathode for Rechargeable Lithium Batteries, S. Okada, S. Sawa, Y. Uebo, M. Egashira, J. Yamaki, M. Tabuchi, H. Kobayashi, H. Fukumi, H. Kageyama, Electrochemistry, 71(12) (2003) 1136-1138.
Improvement of the Stability of LiPF6 Electrolytes toward Water by the Addition of LiCl, T. Kawamura, T. Sonoda, S. Okada, J. Yamaki, Electrochemistry, 71(12) (2003) 1139-1141.
Thermal Stability of Methyl Difluoroacetate as a Novel Electrolyte Solvent for Lithium Batteries Electrolytes, J. Yamaki, T. Tanaka, M. Ihara, K. Sato, M. Egashira I. Watanabe, S. Okada, Electrochemistry, 71(12) (2003) 1154-1156.
Quick Testing of Batteries in Lithium-ion Battery Packs with Impedance-measuring Technology, K. Takeno, M. Ichimura, J. Yamaki, S. Okada, J. Power Sources, 128 (2004) 67-75.
Preparation and Characterization of LiFePO4/Ag Composite for Li-ion Batteries, Y. Chen, S. Okada, J. Yamaki, Composite Interface, 11(3) (2004) 277-283.
Thermal Stability of Electrolytes with Mixtures of LiPF6 and LiBF4 Used in Lithium-ion Cells, E. -S. Hong, S. Okada, T. Sonoda, S. Gopukumar, J. Yamaki, J. Electrochem. Soc., 151(11) (2004) A1836-A1840.
The Preparation of Quaternary Ammonium-based Ionic Liquid Containing a Cyano Group and Its Properties in a Lithium Battery Electrolyte, M. Egashira, S. Okada, J. Yamaki, D. A. Dri, F. Bonadies, B. Scrosati, J. Power Sources, 138 (2004) 240-244.
Iron-based Cathodes/Anodes for Li-ion and Post Li-ion Batteries, S. Okada, J. Yamaki, J. Ind. Eng. Chem., 10(7) (2004) 1104-1113.
The Effect of Carbon Species on the Properties of Fe/C Composite for Metal-air Battery Anode, B. -T. Hang, M. Egashira, I. Watanabe, S. Okada, J. Yamaki, S. Yoon, I. Mochida, J. Power Sources, 143 (2005) 256-264.
Effect of Small Cation Addition on the Conductivity of Quaternary Ammonium-based Ionic Liquids, M. Egashira, S. Okada, J. Yamaki, N. Yoshimoto, M. Morita, Electrochimica Acta, 50 (2005) 3708-3712.
Effect of Nano-size LiCoO2 Cathode Powders on Li-ion Cells, T. Kawamura, M. Makidera, S. Okada, K. Koga, N. Miura, J. Yamaki, J. Power Sources, 146(1-2) (2005) 27-32.
Fluoride Phosphate Li2CoPO4F as a High-voltage Cathode in Li-ion Batteries, S. Okada, M. Ueno, Y. Uebou, J. Yamaki, J. Power Sources, 146 (1-2) (2005) 565-569.
Cathode Properties of Amorphous and Crystalline FePO4, S. Okada, T. Yamamoto, Y. Okazaki, J. Yamaki, M. Tokunaga, T. Nishida, J. Power Sources, 146 (1-2) (2005) 570-574.
Cyano-containing Quaternary Ammonium-based Ionic Liquid as a ‘Co-solvent’ for Lithium Battery Electrolyte, M. Egashira, M. Nakawaga, I. Watanabe, S. Okada, J. Yamaki, J. Power Sources, 146 (1-2) (2005) 685-688.
Methyl Difluoroacetate Inhibits Corrosion of Aluminum Cathode Current Collector for Lithium Ion Cells, T. Kawamura, T. Tanaka, M. Egashira, I. Watanabe, S. Okada, J. Yamaki, Electrochem. and Solid State Letters, 8(9) (2005) A459-A463.
Comparative Study of Fe2O3-nano-loaded Carbon and Fe2O3-nano/Carbon Mixed Composites for Iron-air Battery Anodes, B. -T. Hang, I. Watanabe, M. Egashira, S. Okada, J. Yamaki, S.-H. Yoon, I. Mochida, Electrochem. and Solid State Letters, 8(9) (2005) A476-A480.
Toluene-insoluble Fraction of Fullerene-soot as the Electrode of a Double-layer Capacitor, M. Egashira, S. Okada, Y. Korai, J. Yamaki, I. Mochida, J. Power Sources, 148 (2005) 116-120.
The Electrochemical Properties of Fe2O3-loaded Carbon Electrodes for Iron-air Battery Anodes, B. -T. Hang, I. Watanabe, M. Egashira, S. Okada, J. Yamaki, S. Hata, S.-H. Yoon, I. Mochida, J. Power Sources, 150 (2005) 261-271.
Voltage Prediction of Nano-sized LiNiO2 Cathode for Use in Li-ion Cells, J. Yamaki, M. Makidera, T. Kawamura, M. Egashira, S. Okada, J. Power Sources, 153(2) (2006) 245-250.
The Effect of Additives on the Electrochemical Properties of Fe/C Composite for Fe/Air Battery Anode, B. -T. Hang, T. Watanabe, M. Egashira, I. Watanabe, S. Okada, J. Yamaki, J. Power Sources, 155(2) (2006) 461-469.
Decomposition Reaction of LiPF6-based Electrolytes for Lithium Ion Cells, T. Kawamura, S. Okada, J. Yamaki, J. Power Sources, 156(2) (2006) 547-554.
FePO4 Cathode Properties for Li and Na Secondary Cells, T. Shiratsuchi, S. Okada, J. Yamaki, J. Power Sources, 159(1) (2006) 268-271.
Charge-discharge and High Temperature Reaction of LiCoO2 in Ionic Liquid Electrolytes Based on Cyano-substituted Quaternary Ammonium Cation, M. Egashira, M. Tanaka -Nakagawa, I. Watanabe, S. Okada, J. Yamaki, J. Power Sources, 160(2) (2006) 1387-1390.
TG-MS Analysis of Solid Electrolyte Interphase (SEI) on Graphite Negative-electrode in Lithium-ion Batteries, L. Zhao, I. Watanabe, T. Doi, S. Okada, J. Yamaki, J. Power Sources, 161(2) (2006) 1275-1280.
Electrochemical Properties of Nano-sized Fe2O3-loaded Carbon as a Lithium Battery Anode, B. -T. Hang, I. Watanabe, T. Doi, S. Okada, J. Yamaki, J. Power Sources, 161(2) (2006) 1281-1287.
Preparation of LiMn2O4 Nanoparticles for Li Ion Secondary Batteries by Laser Ablation in Water, T. Tsuji, Y. Tatsuyama, M. Tsuji, K. Ishida, S. Okada, J. Yamaki, Materials Letters, 61(10) (2007) 2062-2065.
Effect of Metal-sulfide Additives on Electrochemical Properties of Nano-sized Fe2O3-loaded Carbon for Fe/Air Battery Bnodes, B. -T. Hang, S. H. Yoon, S. Okada, J. Yamaki, J. Power Sources, 168(2) (2007) 522-532.
Cathode Performance of Olivine-type LiFePO4 Synthesized by Chemical Lithiation, T. Shiratsuchi, S. Okada, J. Yamaki, S. Yamashita, T. Nishida, J. Power Sources, 173(2) (2007) 979-984.
Computer Simulation of a Porous Positive Electrode for Lithium Batteries, T. Doi, H. Fukudome, S. Okada, J. Yamaki, J. Power Sources, 174(2) (2007) 779-783.
Effect of Carbonaceous Materials on Electrochemical Properties of Nano-sized Fe2O3-Loaded Carbon as a Lithium Battery Negative Electrode, B. -T. Hang, T. Doi, S. Okada, J. Yamaki, J. Power Sources, 174(2) (2007) 493-500.
Mössbauer Study of LiFeVPOx as a New Cathode Material for Lithium-ion Battery, T. Nishida, Y. Yoshida, Y. Takahashi, S. Okada, J. Yamaki, J. Radioanal. Nucl. Chem., 275(2) (2008) 417-422.
A Study of Nanosize Fe3O4 Deposited on Carbon Matrix, B. Banov, L. Ljutzkanov, I. Dimitrov, A. Trifonova, H. Vasilchina, A. Aleksandrova, A. Mochilov, B. -T. Hang, S. Okada, J. Yamaki, J. Nanosci. Nanotechnol., 8(2) (2008) 591-594.
Fe2O3-filled Carbon Nanotubes as a Negative Electrode for an Fe-air Battery, B. -T. Hang, S. Okada, J. Yamaki, J. Power Sources, 178(1) (2008) 393-401.
Effect of Binder Content on the Cycle Performance of Nano-Sized Fe2O3-loaded Carbon for Use as a Lithium Battery Negative Electrode, B. -T. Hang, S. Okada, J. Yamaki, J. Power Sources, 178(1) (2008) 402-408.
Surface Modification of LiNi1/2Mn3/2O4 Thin-films by Zirconium Alkoxide/PMMA Composites and Their Effects on Electrochemical Properties, T. Doi, J. Kageura, S. Okada, J. Yamaki, J. Power Sources, 185(1) (2008) 473-479.
Electrochemical Insertion and Extraction of Lithium-ion at Nano-sized LiMn2O4 Particles Prepared by a Spray Pyrolysis, T. Doi, T. Yahiro, S. Okada, J. Yamaki, Electrochim. Acta, 53(27) (2008) 8064-8069.
57Fe Mössbauer and DTA Study of R2O∙2FeO∙V2O5∙P2O5 Glasses [R = Li, Na], H. Kurimoto, T. Nishida, S. Okada, J. Yamaki, J. Ceramic Soc. Japan, 116 (2008) 637-640.
Quantitative Studies on The Thermal Stability of The Interface between Graphite Electrode and Electrolyte, T. Doi, L. Zhao, M. Zhou, S. Okada, J. Yamaki, J. Power Sources, 185(2) (2008) 1380-1385.
Mechanochemical Synthesis of NaMF3 (M = Fe, Mn, Ni) and Their Electrochemical Properties as Positive Electrode Materials for Sodium Batteries, I. Gocheva, M. Nishijima, T. Doi, S. Okada, J. Yamaki, T. Nishida, J. Power Sources, 187(1) (2009) 247-252.
Thermal Stability of the Interface Between Discharged Non-graphitizable Carbon and Electrolyte for Lithium-ion Batteries, T. Doi, L. Zhao, S. Okada, J. Yamaki, Carbon, 47 (2009) 894-900.
Cathodic Performance of LiMn1-xMxPO4(M = Ti, Mg and Zr) Annealed in an Inert Atmosphere, T. Shiratsuchi, S. Okada, T. Doi, J. Yamaki, Electrochim. Acta, 54(11) (2009) 3145-3151.
Electrochemical Properties of Rechargeable Aqueous Lithium Ion Batteries with an Olivine-type Cathode and a Nasicon-type Anode, X. Liu, T. Saito, T. Doi, S. Okada, J. Yamaki, J. Power Sources, 189(1) (2009) 706-710.
Cathode Properties of Metal Trifluorides in Li and Na Secondary Batteries, M. Nishijima, I. Gocheva, S. Okada, T. Doi, J. Yamaki, T. Nishida, J. Power Sources, 190(2) (2009) 558-562.
Effects of Salts in Methyl Difluoroacetate-based Electrolytes on Their Thermal Stability in Lithium-Ion Batteries, T. Tanaka, T. Doi, S. Okada, J. Yamaki, Fuel Cells, 9(3) Sp. Iss. SI (2009) 269-272.
Influence of Irreversible Reactions at Non-graphitizable Carbon Electrodes on Their Stability in Li-ion Batteries, T. Doi, M. Zhou, L. Zhao, S. Okada, J. Yamaki, Electrochem. Commun., 11 (2009) 1405-1408.
A New Iron Oxyfluoride Cathode Active Material for Li-ion Battery, Fe2OF4, I. Gocheva, I. Tanaka, T. Doi, S. Okada, J. Yamaki, Electrochem. Commun., 11 (2009) 1583-1585.
Thermal Characteristics of Nongraphitizable Carbon Negative Electrodes with Electrolyte in Li-ion Batteries, L. Zhao, M. Zhou, T. Doi, S. Okada, J. Yamaki, Electrochim. Acta, 55 (2009) 125-130.
Liquid-Phase Synthesis of Uniformly Nanosized LiMnPO4 Particles and Their Electrochemical Properties for Lithium-ion Batteries, T. Doi, S. Yatomi, T. Kida, S. Okada, J. Yamaki, Cryst. Growth & Des., 9(12) (2009) 4990-4992.
Synthesis and Electrochemical Characterization of Amorphous Li-Fe-P-B-O Cathode Materials for Lithium Batteries, M. Isono, S. Okada, J. Yamaki, J. Power Sources, 195 (2010) 593-598.
Performance of NASICON Symmetric Cell with Ionic Liquid Electrolyte, L.S. Plashnitsa, E. Kobayashi, Y. Noguchi, S. Okada, J. Yamaki, J. Electrochem. Soc., 157(4) (2010) A536-A543.
Electrochemical Properties of Trirutile-type Li2TiF6 as Cathode Active Material in Li-ion Batteries, I.D. Gocheva, T. Doi, S. Okada, J. Yamaki, Electrochemistry,78(5) (2010) 471-474.
High Voltage Performances of Li2NiPO4F Cathode with Dinitrile-based Electrolytes, M. Nagahama, N. Hasegawa, S. Okada, J. Electrochem. Soc., 157 (2010) A748-A752.
Electrochemical Properties of Li Symmetric Solid State Cell with NASICON-type Solid Electrolyte and Electrodes, E. Kobayashi, L.S. Plashnitsa, T. Doi, S. Okada, J. Yamaki, Electrochem. Commun., 12 (2010) 894-896.
Thermal Stability of FeF3 Cathode for Li-ion Batteries, M. Zhou, L. Zhao, T. Doi, S. Okada, J. Yamaki, J. Power Sources, 195 (2010) 4952-4956.
Symmetric Lithium-ion Cell Based on Lithium Vanadium Fluorophosphate with Ionic liquid electrolyte, L. S. Plashnitsa, E. Kobayashi, S. Okada, J. Yamaki, Electrochimica Acta, 56 (2011) 1344-1351.
Thermal Characteristics of a FeF3 Cathode via Conversion Reaction in Comparison with LiFePO4, M. Zhou, L. Zhao, S. Okada, J. Yamaki, J. Power Sources, 196 (2011) 8110-8115.
Liquid-phase Synthesis of Highly-disperse NaFeF3 Perticles and Their Electrochemical Properties for Sodium-ion Batteries, Y. Yamada, T. Doi, I. Tanaka, S. Okada, J. Yamaki, J. Power Sources, 196 (10), (2011) 4837-4841.
LiPF6/Methyl Difluoroacetate Electrolyte with Vinylene Carbonate Additive for Li-ion Batteries, K. Sato, L. Zhao, S. Okada, J. Yamaki, J. Power Sources, 196(13) (2011) 5617-5622.
Electrochemical Properties of NaTi2(PO4)3 Anode for Rechargeable Aqueous Sodium-ion Batteries, S.-I. Park, I. Gocheva, S. Okada, J. Yamaki, J. Electrochem. Soc., 158(10) (2011) A1067-A1070.
Synthesis of Nano Fe3O4 Loaded Tubular Carbon Nanofibers and Their Application as Negative Electrodes for Fe/Air Batteries, A. Ito, L. Zhao, S. Okada, J. Yamaki, J. Power Sources, 196 (2011) 8154-8159.
Instigation of the Irreversible Reaction Mechanism and the Reactive Trigger on SiO Anode Material for Lithium-ion Battery, H. Yamamura, K. Nobuhara, S. Nakanishi, H. Iba, S. Okada, J. Ceram. Soc. Jpn., 119(1395) (2011) 855-860.
Novel Synthesis and Electrochemical Properties of Perovskite-type NaFeF3 for a Sodium-ion Battery, A. Kitajou, H. Komatsu, K. Chihara, I. D. Gocheva, S. Okada, J. Yamaki, J. Power Sources, 198 (2012) 389-392.
Quantitative Studies on the Influence of LiPF6 on the Thermal Stability of Graphgite with Electrolyte, M. Zhou, L. Zhao, S. Okada, J. Yamaki, J. Electrochem. Soc., 159 (2012) A44-A48.
Thermal Stability of Silicon Negative Electrode for Li-ion Battries, L. Zhao, S. -H. Han, S. Okada, B. -K. Na, K. Takeno, J. Yamaki, J. Power Sources, 203 (2012) 78-83.
Mechanism on Exothermic Heat of FeF3 Cathode in Li-ion Batteries, M. Zhou, L. Zhao, A. Kitajou, S. Okada, J. Yamaki, J. Power Sources, 203 (2012) 103-108.
Effect of Binder Materials on Cycling Performance of Fe2O3 Electrodes in Alkaline Solution Corresponding, H.Kitamura, L. Zhao, B. -T. Hang, S. Okada, J. Yamaki, J. Power Sources, 208 (2012) 391-396.
Effect of Charge Current Density on Electrochemical Performance of Fe/C Electrodes in Alkaline Solutions, H. Kitamura, L. Zhao, B. -T. Hang, S. Okada, J. Yamaki, J. Electrochem. Soc., 159 (2012) A720-A724.
Cathode Properties of Na3M2(PO4)2F3 [M = Ti, Fe, V] for Sodium-ion Batteries, K. Chihara, A. Kitajou, I.D. Gocheva, S. Okada, J. Yamaki, J. Power Sources, 227 (2013) 80-85.
Electrochemical and Thermal Properties of α-NaFeO2 Cathode for Na-ion Batteries, J. Zhao, L. Zhao, N. Dimov, S. Okada, T. Nishida, J. Electrochem. Soc., 160 (2013) A3077-A3081.
Fabrication and Performance of All Solid-State Symmetric Sodium Battery Based on NASICON-related Compounds, Y. Noguchi, E. Kobayashi, L. S. Plashnitsa, S. Okada, J. Yamaki, Electrochimica Acta, 101 (2013) 59-65.
Transition Metal NaMF3 Compounds as Model Systems for Studying the Feasibility of Ternary Li-M-F and Na-M-F Single Phases as Cathodes for Lithium-ion and Sodium-ion Batteries, N. Dimov, A. Nishimura, K. Chihara, A. Kitajou, I. D. Gocheva, S. Okada, Electrochim. Acta, 110 (2013) 214-220.
Cathode Properties of Na2C6O6 for Sodium-ion Batteries, K. Chihara, N. Chujo, A. Kitajou, S. Okada, Electrochim. Acta, 110 (2013) 240-246.
Improvement of Solid-state Symmetric Cell Performance with Lithium Vanadium Phosphate, E. Kobayashi, A. Kitajou, S. Okada, J. Yamaki, J. Power Sources, 244 (2013) 312-317.
Effect of VC Additive on MFA-based Electrolyte in Li-ion Battries, L. Zhao, S. Okada, J. Yamaki, J. Power Sources, 244, (2013) 369-374.
Cathode Properties of Mn-doped inverse spinels for Li-ion battery, A. Kitajou, J. Yoshida, S. Nakanishi, S. Okada, J. Yamaki, J. Power Sources, 244 (2013) 658-662.
Electrochemical and Thermal Properties of Hard Carbon-type Anodes for Na-ion Batteries, J. Zhao, L. Zhao, K. Chihara, S. Okada, J. Yamaki, S. Matsumoto, S. Kuze, K. Nakane, J. Power Sources, 244, (2013) 752-757.
Synthesis and Cathode Properties of a Cubic Rocksalt-type Si-doped Li2NiTiO4 for Lithium-ion Batteries, Y. Kawano, A. Kitajou, S. Okada, J. Power Sources, 242 (2013) 768-774.
Synthesis of FeOF Using Roll-quenching Method and the Cathode Properties for Lithium-ion Battery, A. Kitajou, H. Komatsu, R. Nagano, S. Okada, J. Power Sources, 243 (2013) 494-498.
What determines the critical size for phase separation in LiFePO4 in lithium ion batteries?, T. Ichikubo, T. Doi, K. Tokuda, E. Matsubara, T. Kida, T. Kawaguchi, S. Yagi, S. Okada, J. Yamaki, J. Materials Chem., 1 (2013) 14532-14537.
Mössbauer Study of New Vanadate Glass with Large Charge-discharge Capacity, S. Kubuki, H. Masuda, K. Matsuda, K. Akiyama, A. Kitajo, S. Okada, P. Zsabka, Z. Homonnay, E. Kuzmann, T. Nishida, Hyperfine Interact., 226 (2014) 765-770.
Quantitative studies on thermal stability of a FeF3 cathode in methyl difluoroacetate-based electrolyte for Li-ion batteries, M. Zhou, L. Zhao, S. Okada, J. Yamaki, J. Power Sources, 253 (2014) 74-79.
Discharge/Charge Reaction Mechanism of a Pyrite-type FeS2 Cathode for Sodium Secondary Batteries, A. Kitajou, J. Yamaguchi, S. Hara, S. Okada, J. Power Sources, 247 (2014) 391-395.
Electrochemical and Thermal Properties of P2-type Na2/3Fe1/3Mn2/3O2 for Na-ion Batteries, J. Zhao, J. Xu, D. H. Lee, N. Dimov, Y. S. Meng, S. Okada, J. Power Sources, 264 (2014) 235-239.
The Rate Equation for Oxygen Evolution by Decomposition of LixCoO2 at Elevated Temperatures, J. Yamaki, Y. Shinjo, T. Doi, S. Okada, J. Electrochem. Soc., 161 (2014) A1648-A1654.
TiO2-entrained Tubular Carbon Nanofiber and its Electrochemical Properties in the Rechargeable Na-ion Battery System, Y. Ohata, J. Yun, R. Miyamae, T. Kim, J. Kim. M. -H. Seo, A. Kitajou, J. Miyawaki, S. Okada, S. -H. Yoon, Appl. Therm. Eng., 72 (2014) 309-314.
The Rate Equation of Decomposition for Electrolytes with LiPF6 in Li-ion Cells at Elevated Temperatures, J. Yamaki, Y. Shinjo, T. Doi, S. Okada, Z. Ogumi, J. Electrochem. Soc., 162 (2015) A520-A530.
Electrochemical Properties of Tin Oxide Anodes for Sodium-ion Batteries, Y. -C. Lu, C. Ma, J. Alvarado, T. Kidera, N. Dimov, Y. -S. Meng, S. Okada, J. Power Sources, 284 (2015) 287-295.
Structural and Electrochemical Properties of Al-and Fe-doped Li3V2(PO4)3 for All-solid-state Symmetric Lithium-Ion Batteries Prepared by Spray-drying-assisted Carbothermal Method, Y. Kee, N. Dimov, E. Kobayashi, A. Kitajou, S. Okada, Solid State Ionics, 272 (2015) 138-143.
Improved electrochemical Performance of Tin-sulfide Anodes for Sodium-ion Batteries, Y. -C. Lu, C. Ma, J. Alvarado, N. Dimov, Y. -S. Meng, S. Okada, J. Mater. Chem. A, 3 (2015) 16971-16977.
Energy-savvy Solid-state and Sonochemical Synthesis of Lithium Sodium Titanate as an Anode Active Material for Li-ion Batteries, S. Ghosh, Y. Kee, S. Okada, P. Barpanda, J. Power Sources, 296 (2015) 276-281.
Enhanced Performance of Yolk-shell Structured Si-PPy Composite as an Anode for Lithium Ion Batteries, Z. Liu, Y. Luo, M. Zhou, W. Wang, N. Gan, S. Okada, J. Yamaki, Electrochemistry, 83 (2015) 1067-1070.
Lithium Metal Borate (LiMBO3) Family of Insertion Materials for Li-ion Batteries: a Sneak Peak, P. Barpanda, D. Dwibedi, S. Ghosh, Y. Kee, S. Okada, Ionics, 21 (2015) 1801-1812.
Insight into the Limited Electrochemical Activity of NaVP2O7, Y. Kee, N. Dimov, A. Staykov, P. Barpanda, Y. -C. Lu, K. Minami, S. Okada, RSC Adv., 5 (2015) 64991-64996.
Orthorhombic Lithium Titanium Phosphate as an Anode Material for Li-ion Rechargeable Battery, Y. Kee, N. Dimov, K. Minami, S. Okada, Electrochim. Acta, 174 (2015) 516-520.
Electrochemical Performance of a Novel Cathode Material “LiFeOF” for Li-ion Batteries, A. Kitajou, E. Kobayashi, S. Okada, Electrochemistry, 83 (2015) 885-888.
Reconversion Reaction of LiF/Fe Composite Thin Film Cathodes for Lithium-Ion Battery, H. Hori, S. Okada, Electrochemistry, 83 (2015) 909-913.
Discharge Reaction Mechanism in Na/FeS2 Batteries: First-principles Calculations, H. Momida, A. Kitajyou, S. Okada, T. Yamashita, T. Oguchi, J. Phys. Soc. Japan, 84 (2015) 124709-124715.
Capacity Improvement by Deficit of Transition Metals in Inverse Spinel LiNi1/3Co1/3Mn1/3VO4 Cathodes, A. Kitajou, J. Yoshida, S. Nakanishi, Y. Matsuda, R. Kanno, T. Okajima, S. Okada, J. Power Sources, 302 (2016) 240-246.
Synthesis of Sub-10 nm Copper Sulphide Rods as High-performance Anode for Long-cycle Life Li-ion Batteries, M. Zhou, N. Peng, Z. Liu, Y. Xi, H. He, Y. Xia, Z. Liu, S. Okada, J. Power Sources, 306 (2016) 408-412.
Investigation of Metastable Na2FeSiO4 as a Cathode Material for Na-ion Secondary Battery, Y. Kee, N. Dimov, A. Staykov, S. Okada, Mater. Chem. Phys., 171 (2016) 45-49.
Improvement of Cathode Properties by Lithium Excess in Disordered Rocksalt Li2+2xMn1-xTi1-xO4, A. Kitajou, K. Tanaka, H. Miki, H. Koga, T. Okajima, S. Okada, Electrochemistry, 84 (2016) 597-600.
Electrolyte Dependence of Na2FeP2O7//NaTi2(PO4)3 Rechargeable Aqueous Sodium-ion Batteries, K. Nakamoto, Y. Kano, A. Kitajou, S. Okada, J. Power Sources, 327 (2016) 327-332.
Insight into Mg-doping effects on Na3Ni2SbO6 cathode host for Na-ion batteries, Y. Kee, N. Dimov, A. Staykov, S. Okada, Materials Letters, 183 (2016) 187-190.
In situ Crosslinked PVA-PEI Polymer Binder for Long-cycle Silicon Anodes in Li-ion Batteries, Z. Liu, S. Han, C. Xu, Y. Luo, N. Peng, C. Qin, M. Zhou, W. Wang, L. Chen, S. Okada, RSC Adv., 6 (2016) 68371-68378.
Investigation of Al-doping Effects on the NaFe0.5Mn0.5O2 Cathode for Na-ion Batteries, Y. Kee, N. Dimov, S. Champet, D. H. Gregory, S. Okada, Ionics, 22 (2016) 2245-2258.
Electrochemical Properties and Thermal Stability of Silicon Monoxide Anode for Rechargeable Lithium-Ion Batteries, H. Fan, X. Li, H. He, N. Peng, Y. Han, Z. Liu, M. Zhou, L. Zhao, S. Okada, Electrochemistry, 84 (2016) 574-577.
A Single-phase, All-solid-state Sodium Battery using Na3-xV2-xZrx(PO4)3 as the Cathode, Anode, and Electrolyte, A. Inoishi, T. Omuta, E. Kobayashi, A. Kitajou, S. Okada, Adv. Mater. Interfaces, 4 (2017) 1600942-1600944.
Effect of Concentrated Electrolyte on Aqueous Sodium-ion Battery with Sodium Manganese Hexacyanoferrate Cathode, K. Nakamoto, R. Sakamoto, M. Ito, A. Kitajou, S. Okada, Electrochemistry, 85 (2017) 179-185.
Cathode Properties of Perovskite-type NaMF3 (M = Fe, Mn, and Co) Prepared by Mechanical Ball Milling for Sodium-ion Battery, A. Kitajou, Y. Ishado, T. Yamashita, H. Momida, T. Oguchi, S. Okada, Electrochim. Acta, 245 (2017) 424-429.
Discharge and Charge Reaction of Perovskite-type MF3 (M = Fe and Ti) Cathode for Li-ion Batteries, A. Kitajou, I. Tanaka, Y. Tanaka, E. Kobayashi, H. Setoyama, T. Okajima, S. Okada, Electrochemistry, 85 (2017) 472-477.
Synthesis and Electrochemical Properties of Fe3C-carbon Composite as an Anode Material for Lithium-ion Batteries, A. Kitajou, S. Kudo, J. Hayashi, S. Okada, Electrochemistry, 85 (2017) 630-633.
Improvement in the Energy Density of Na3V2(PO4)3 by Mg Substitution, A. Inoishi, Y. Yoshioka, L. Zhao, A. Kitajou, S. Okada, ChemElectroChem, 4 (2017) 2755-2759.
Single-phase All-solid-state Lithium-ion Battery Using Li3V2(PO4)3 as the Cathode, Anode, and Electrolyte, A. Inoishi, T. Omuta, Y. Yoshioka, E. Kobayashi, A. Kitajou, S. Okada, ChemistrySelect, 2 (2017) 7925-7929.
Thermal Characteristics of Conversion-type FeOF Cathode in Li-ion Batteries, L. Zhao, A. Kitajou, S. Okada, Batteries, 3 (2017) 33-44.
Proton-driven Intercalation and Ion Substitution Utilizing Solid-state Electrochemical Reaction, M. Fujioka, C. Wu, N. Kubo, G. Zhao, A. Inoishi, S. Okada, S. Demura, H. Sakata, M. Ishimaru, H. Kaiju, J. Nishii, J. Am. Chem. Soc., 139 (49) (2017) 17987-17993.
Enabling the Electrochemical Activity in Sodium Iron Metaphosphate [NaFe(PO3)3] Sodium Battery Insertion Material: Structural and Electrochemical Insights, R. Gond, S. S. Meena, S. M. Yusu, V. Shukla, N. K. Jena, R. Ahuja, S. Okada, P. Barpanda, Inorg. Chem., 56 (2017) 5918-5929.
Mixing Ionic Liquids and Ethylene Carbonate as Safe Electrolytes for Lithium-ion Batteries, Linh T.M. Le, Thanh D. Vo, Khanh H.P. Ngo, S. Okada, F. Alloin, A. Garg, Phung M.L. Le, J. Mol. Liq., 271 (2018) 769-777.
SnSb Alloy Blended with Hard Carbon as Anode for Na-ion Batteries, Y. C. Lu, N. Dimov, S. Okada, T. H. Bui, Energies, 11 (2018) 1614-1623.
A Single-phase All-solid-state Lithium Battery Based on Li1.5Cr0.5Ti1.5(PO4)3 for High Rate Capability and Low Temperature Operation, A. Inoishi, A. Nishio, Y. Yoshioka, A. Kitajou, S. Okada, Chem. Comm., 54 (2018) 3178-3181.
Amorphous xLiF-FeSO4 (1 ≤ x ≤ 2) Composites as a Cathode Material for Lithium Ion Batteries, A. Kitajou, Y. Ishado, A. Inoishi, S. Okada, Solid State Ionics, 326 (2018) 48-51.
Single-phase All-solid-state Silver Battery using Ag1.5Cr0.5Ti1.5(PO4)3 as Anode, Cathode and Electrolyte, A. Inoishi, A. Nishio, A. Kitajou, S. Okada, ChemistrySelect, 3 (2018) 9965-9968.
Electrochemical Performance and Thermal Stability of Iron Oxyfluoride (FeOF) for Sodium-ion Batteries, A. Kitajou, L. Zhao, R. Nagano, A. Inoishi, E. Kobayashi, S. Okada, Batteries, 4 (2018) 68.
Nanotube-structured Na2V3O7 as a Cathode Material for Sodium-ion Batteries with High-rate and Stable Cycle Performances, N. Tanibata, Y. Kondo, S. Yamada, M. Maeda, H. Takeda, M. Nakayama, T. Asaka, A. Kitajou, S. Okada, Sci. Rep., 8 (2018) 17199-17205.
Effect of Li3BO3 Addition to NASICON-type Single-phase All-solid-state Lithium Battery Based on Li1.5Cr0.5Ti1.5(PO4)3, A. Nishio, A. Inoishi, A. Kitajou, S. Okada, J. Ceramic Soc. Japan, 127 (2019) 18-21.
Na2FePO4F Fluorophosphate as a Positive Insertion Material for Aqueous Sodium-ion Batteries, L. Sharma, K. Nakamoto, R. Sakamoto, S. Okada, P. Barpanda, ChemElectroChem, 6 (2019) 444-449.
Over 2 V Aqueous Sodium-ion Battery with Prussian Blue-type Electrodes, K. Nakamoto, R. Sakamoto, Y. Sawada, M. Ito, S. Okada, Small Methods, 3 (2019) 1800220-1800224.
Electrochemical Properties of Titanium Fluoride with High Rate Capability for Lithium-ion Batteries, A. Kitajou, K. Eguchi, Y. Ishado, S. Okada, H. Setoyama, T. Okajima, J. Power Sources, 419 (2019) 1-5.
Electrochemical Investigation of LiFePO4OH as an Anode Material for Aqueous Lithium-ion Batteries, L. Sharma, K. Nakamoto, S. Okada, P. Barpanda, J. Power Sources, 429 (2019) 17-21.
Effect of Activated Carbon on Re-conversion Reaction of Cu/LiCu/C Electrode with LiPF6/Methyl Difluoroacetate Electrolyte, K. Hashizaki, S. Dobashi, S. Okada, T. Hirai, J. Yamaki, Z. Ogumi, Current J. Appl. Sci. and Tech., 32(3) (2019) 1-12.
Suppression Mechanism for Dissolution of Conversion-type CuCl2 Electrode in LiPF6/Methyl Difluoroacetate Electrolyte, K. Hashizaki, S. Dobashi, S. Okada, T. Hirai, J. Yamaki, Z. Ogumi, J. Electrochem. Soc., 166 (2019) A568-A573.
Sodium Ion Conducting Gel Polymer Electrolyte Using Poly(vinylidene fluoride hexafluoropropylene), D. T. Vo, H. N. Do, T. T. Nguyen, T. T. H. Nguyen, V. M. Tran, S. Okada, M. L. P. Le, Mater. Sci. Eng. B, 241 (2019) 27-35.
Evaluation of α1-LiVOPO4, β-LiVOPO4, and α-LiVOPO4 Synthesized from a Same Precursor by Hydrothermal Method, A. Nojima, A. Sano, S. Fujita, K. Ohtsuki, S. Okada, J. Electrochem. Soc., 166 (2019) A3731-A3738.
First-principles Study of X-ray Absorption Spectra in NaFeSO4F for Exploring Na-ion Battery Reactions, H. Momida, A. Kitajou, S. Okada, T. Oguchi, J. Phys. Soc. Jpn., 88 (2019) 124709-124715.
From Information Technology to Energy Technology, 岡田重人, Electrochemistry, 87 (2019) 246.
First-principles Study of Na-ion Battery Performance and Reaction Mechanism of Tin Sulfide as Negative Electrode, H. Kotaka, H. Momida, A. Kitajou, S. Okada, T. Oguchi, Chem. Rec., 19 (2019) 811-816.
Amorphous xNaF-FeSO4 System (1 ≤ x ≤ 2) with Excellent Cathode Propertries for Sodium Ion Batteries, A. Kitajou, H. Momida, T. Yamashita, T. Oguchi, S. Okada, ACS Appl. Energy Mater., 2 (2019) 5968-5974.
第一原理計算を用いた硫化スズ電極のNaイオン電池性能評価と放電機構解明(Elucidation of Discharge Mechanism and Evaluation of Na-ion Battery Performance of Tin Sulfide (SnS) Electrode by Using First Principle Calculatio), 小鷹浩毅, 小口多美夫, 喜多條鮎子, 岡田重人, J. Comp. Chem. Japan, 18 (2019) 78-83.
Energy Spotlight, L. F. J. Piper, A. Manthiram, S. Okada, M. S. Islam, Y. S. Meng, X. Li, B. D. McCloskey, Y. -K. Sun, L. Nazar, S. Banerjee, ACS Energy Lett., 4 (2019) 2763-2769.
Cathode Properties of Na3MnPO4CO3 Prepared by the Mechanical Ball Milling Method for Na-ion Batteries, B. Xie, R. Sakamoto, A. Kitajou, K. Nakamoto, L. Zhao, S. Okada, W. Kobayashi, M. Okada, T. Takahara, Energies, 12 (2019) 4534-4543.
Electrochemical Properties of Titanium Fluoride with High Rate Capability for Lithium-ion Batteries, A. Kitajou, K. Eguchi, Y. Ishado, H. Setoyama, T. Okajima, S. Okada, J. Power Sources, 419 (2019) 1-5.
Effects of Mn-doping on the Structural and Electrochemical Properties of Na3Ni2SbO6 for Sodium-ion Battery, Y. Kee, B. Put, N. Dimov, A. Staykov, S. Okada, Batteries & Supercaps, 3 (2020) 1-8.
Cathode Properties of Na3FePO4CO3 Prepared by Mechanical Ball Milling Method for Na-ion Batteries, B. Xie, R. Sakamoto, A. Kitajou, K. Nakamoto, L. Zhao, S. Okada, Y. Fujita, N. Oka, T. Nishida, W. Kobayashi, M. Okada, T. Takahara, Sci. Rep., 24 (2020) 3278-3285.
Physicochemical and Electrochemical Properties of Sulfolane-carbonate Electrolytes for Sodium-ion Conduction, P. M. L. Le, T. D. Vo, A. Phan, H. N. Van, L. T. M. Le, A. Garg, S. Okada, J. Mol. Liq., 307 (2020) 112982.
Metal-organic Framework of [Cu2(BIPA-TC)(DMA)2]n: A Promising Anode Material for Lithium-ion Battery, M. Zhou, B. Pang, J. Ge, L. Han, M. Wu, P. Zhang, R. Li, S. Okada, Y. Luo, ChemistrySelect, 5 (2020) 4160-4164.
An Experimental and First-principle Investigation of the Ca-substitution Effect on P3-type Layered NaxCoO2, Y. Ishado, H. Hasegawa, S. Okada, M. Mizuhata, H. Maki, M. Matsui, Chem. Comm., 58 (2020) 8107-8110.
Suppression of O-redox Reactions by Multivalent Cr in Li-excess Li2.4M0.8M'0.8O4 (M, M' = Cr, Mn, and Ti) Cathodes with layered and Cation-disordered Rock-salt Structures, M. Hamaguchi, A. Kitajou, H. Momida, S. Okada, T. Oguchi, Electrochim. Acta, 354 (2020) 136630.
Local Structure of a Highly Concentrated NaClO4 Aqueous Solution-type Electrolyte for Sodium-ion Batteries, R. Sakamoto, M. Yamashita, K. Nakamoto, Y. Zhou, N. Yoshimoto, K. Fujii, T. Yamaguchi, A. Kitajou, S. Okada, Phys. Chem. Chem. Phys., 22 (2020) 26452.
Improved Electrochemical Properties of LiCoO2 via Ni, Mn Co-doping from LiNi0.8Co0.1Mn0.1O2 for Rechargeable Lithium-ion Batteries, B. C. Pang, J. Huang, J. W. Ge, Y. L. Luo, M. J. Zhou, Y. Luo, S. Okada, Electrochemistry, 88 (2020) 295-299.
Exploring Factors Limiting Three Na+ Extraction from Na3V2(PO4)3, Y. Ishado, A. Inoishi, S. Okada, Electrochemistry, 88 (2020) 457-462.
An All-solid-state Bromide Ion Battery, A. Inoishi, M. Hokazono, E. Kashiwazaki, N. Setoguchi, T. Sakai, R. Sakamoto, S. Okada, ChemElectroChem, 8 (2021) 246-249.
Stabilized Phase Transition Process of Layered NaxCoO2 via Ca-substitution, H. Hasegawa, Y. Ishado, S. Okada, M. Mizuhara, H. Maki, M. Matsui, J. Electrochem. Soc., 168 (2021) 010509.
Cathode Properties of FeF3-V2O5 Glass/C for Lithium-ion Batteries, A. Kitajou, M. Hokazono, N. Taguchi, S. Tanaka, S. Okada, J. Alloy Compd., 856 (2021) 157449.
Effect of Na3BO3 Addition into Na3V2(PO4)3 Single-phase All-solid-state Batteries, A. Nishio, N. Shirai, A. Inoishi, S. Okada, Electrochemistry, 89 (2021) 244-249.
Composition Manipulation of Bis(fluorosulfonyl)imide-based Ionic Liquid Electrolyte for High-voltage Graphite// LiNi0.5Mn1.5O4 Lithium-ion Batteries, P. C. Rath, Y. -W. Wang, J. Patra, B. Umesh, T. -J. Yeh, S. Okada, J. Li, J. -K. Chang, Chem. Eng. J., 415 (2021) 218904.
The In situ Formation of an Electrolyte via the Lithiation of Mg(BH4)2 in an All-solid-state Lithium Battery, H. Sato, R. Sakamoto, H. Minami, H. Izumi, K. Ideta, A. Inoishi, S. Okada, Chem. Comm., 57 (2021) 2605-2608.
Improved Electrochemical Properties of LiCoO2 via Ni, Mn Co-doping from LiNi0.8Co0.1Mn0.1O2 for Rechargeable Lithium-ion Batteries, B. Pang, J. Huang, J. Ge, Y. Luo, M. Zhou, Y. Luo, S. Okada, Electrochemistry, 88 (2020) 295-299.
Synthesis of Bimetallic Sulfide FeCoS4@carbon Nanotube Graphene Hybrid as a High-performance Anode Material for Sodium-ion Batteries, Z. -Q. Hao, N. Dimov, J. -K. Chang, S. Okada, Chem. Eng. J., 423 (2021) 130070.
Tin Phosphide-carbon Composite as a High-performance Anode Material for Sodium-ion Batteries with High Energy Density, Z. -Q. Hao, N. Dimov, J. -K. Chang, S. Okada, Chem. Eng. J., 64 (2021)463-474.
A Trifluoroacetate-based Concentrated Electrolyte for Symmetrical Aqueous Sodium-ion Battery with NASICON-type Na2VTi(PO4)3 Electrodes, K. Nakamoto, S. Okada, Electrochemistry, 85 (2021) 415-419.
All-solid-state Chloride-ion Battery with Inorganic Solid Electrolyte, R. Sakamoto, N. Shirai, A. Inoishi, S. Okada, ChemElectroChem, 8 (2021) 1-5.
57Fe-Mössbauer and XAFS Studies of Conductive Sodium Phospho-vanadate Glass as a Cathode Active Material for Na-ion Batteries with Large Capacity, S. Kubuki, K. Osouda, A. S. Ali, I. Khan B. Zhang, A. Kitajou, S. Okada, J. Okabayashi, Z. Homonnay, E. Kuzmann, T. Nishida, L. Pavić, A. Šantić, A. Moguš-Milanković, J. Non Cryst. Solids, 570 (2021) 120998.
Hydrogenated Anatase and Rutile TiO2 for Sodium-Ion Battery Anodes, J. Patra, S. -C. Wu, I. -C. Leu, C. -C. Yang, R. Dhaka, S. Okada, H. -L. Yeh, C. -M. Hsieh, B. -K. Chang, J. -K. Chang, ACS Appl. Energy Mater., 4(6) (2021) 5738-5746.
Thermal risk evaluation of concentrated electrolytes for Li-ion batteries, L. Zhao, A.Inoishi, S. Okada, J. Power Sources Adv., 12 (2021) 100079.
Enhanced Electrochemical Performance of Li2.72Na0.31MnPO4CO3 as a Cathode Material in “Water-in-salt” Electrolytes, B. Xie, J. Bai, R. Sakamoto, A. Kitajou, L. Zhao, K. Albrecht, K. Nakamoto, S. Okada, W. Kobayashi, M. Okada, T. Takahara, Chem. Comm., 57 (2021) 12840-12843.
Development of Electrically Conductive ZrO2-CaO-Fe2O3-V2O5 Glass and Glass-ceramics as a New Cathode Active Material for Na-ion Battery with High Performance, I. Khan, B. Zhang, K. Matsuda, P. A. Bingham, A. Kitajou, A. Inoishi, S. Okada, S. Yoshida, T. Nishida, Z. Homonnay, E. Kuzumann, S. Kubuki, J. Alloys Compd., 899 (2021) 163309.
Flexible Poly(vinylidene Fluoride-cohexafluoropropylene)-based Gel Polymer Electrolyte for High-performance Lithium-ion Batteries, P. Zhang, R. Li, J. Huang, B. Liu, M. Zhou, B. Wen, Y. Xia, S. Okada, RSC Advan., 11 (2021) 11943-11951.
Enhanced High Voltage Performance of LiNi0.5Mn0.3Co0.2O2 Cathode via the Synergistic Effect of LiPO2F2 and FEC in Fluorinated Electrolyte for Lithium-ion Batteries, R. Li, P. Zhang, J. Huang, B. Liu, M. Zhou, B. Wen, Y. Luoc, S. Okada, RSC Advan., 11 (2021) 7786-7795.
Exploring the Sodium-storage Mechanism of Nanosized Disodium Rhodizonate as the Anode Active Material, Z. Hao, N. Dimov, A. Nishio, R. Sakamoto, S. Okada, Adv. Sustain. Syst., in press.
Dual Interface Design of Ga-doped Li7La3Zr2O12/polymer Composite Electrolyte for Solid-state Lithium Batteries, P. Rath, W. -L. Hsu,C. -C. Chen, C.- Y. Huang, W.- W. Wu, S. Okada, Q. Dong, C. -C. Yang, T. -C. Lee, J. -K. Chang, ACS Appl. Mater. Interfaces, Submitted.
Voltage Prediction of Nano-sized LiNiO2 Cathode for Use in Li-ion Cells, J. Yamaki. M. Makidera, T. Kawamura, M. Egashira, S. Okada, Solid State Ionics: The Science and Technology of Ions in Motion, World Scientific, (2004) 399-410.
Solid State and Aqueous Li-ion Batteries with Polyanionic Electrode Active Materials, S. Okada, S. -I. Park, E. Kobayashi, J. Yamaki, Advances in Science and Technology,72 (2011) 309-314.
Lithium Cycling Behavior in Lithium Added Amorphous V2O5, S. Okada, H. Ohtsuka, Y. Sakurai, J. Yamaki, New Materials & New Processes, 4(5) (1988) 17-20.
Oxidation Behavior of Electrolytes Used in Lithium Ion Batteries, M. Egashira, S. Okada, J. Yamaki, Engineering Sciences Reports, Kyushu University, 22(2) , (2000) 167-172.
Cathode Properties of Phospho-olivine for Lithium Secondary Batteries, S. Okada, S. Sawa, M. Egashira, J. Yamaki, The Reports of Institute of Advanced Materials Study, 14(2) (2000) 133-137.
Properties of Fullerene Soot as the Electrode of a Double-layer Capacitor, M. Egashira, S. Okada, J. Yamaki, Memories of The Institute of Scientific and Industrial Research, 57, P1-62 (2000) 209-210.
Voltage Prediction from the Coulomb Potential Created by the Atoms of a Cathode Active Material for Li Ion Cells, J. Yamaki, M. Egashira, S. Okada, ITE Letters on Batteries, New Technologies & Medicine, 1(1) (2000) 53-58.
Synthesis, Structures, and Electrochemical Characteristics of Pyrophosphates, Y. Uebo, S. Okada, M. Egashira, J. Yamaki, The Reports of Institute of Advanced Material Study, 15 (2001) 57-61.
Structure and Cathode Properties of Phospho-olivine LiCoPO4 for Lithium Secondary Batteries, S. Okada, S. Sawa, Y. Uebo, Activity Report on Neutron Scattering Research, 8 (2001) 247-248.
Structure and Battery Properties of LiCoPO4 and Li2CoPO4F, S. Okada, M. Ueno, Y. Uebo, J. Yamaki, Activity Report on Neutron Scattering Research, 9 (2002) 86-87.
Structure and Battery Properties of Calcite-type MBO3 (M = V, Fe), S. Okada, Y. Uebo, J. Yamaki, Activity Report on Neutron Scattering Research, 9 (2002) 88-89.
Perparation of Ferri Phosphate and Its Application to Lithium Battery, Y. Chen, S. Okada, J. Yamaki, J. of Huaqiao University, 23(4) (2002)407-411.
Symmetric Cell with LiMn2O4 for Aqueous Lithium-ion Battery, S. -I. Park, S. Okada, J. Yamaki, Novel Carbon Resource Sciences, 3 (2010) 27-31.
Research and Development of Post-Olivine Type Cathodes for High-performance Li Batteries, S. Okada, Novel Cabon Resources Sciences NEWSLETTER, 6 (2011) 12-14.
Grand Design of Advanced Next Generation Cathode Active Materials, S. Okada, Novel Cabon Resources Sciences NEWSLETTER, 6 (2011) 15-20.
Invention of Eco-friendly Post Li-ion Secondary Batteries, S. Okada, Novel Cabon Resources Sciences NEWSLETTER, 7 (2012) 29-34.
Research and Development of High-capacity, High-voltage Fluoride-type Cathode Active Materials (NEDO RISING Project),Novel Cabon Resources Sciences, S. Okada, NEWSLETTER, 8 (2013) 9-12.
Cathode Property of Na2CxOx [x = 4, 5, and 6] and K2C6O6 for Sodium-ion Batteries, K. Chihara, M. Ito, A. Kitajou, S. Okada, Evergreen, 4 (2017) 1-5.
Cathode Properties of Sodium Manganese Hexacyanoferrate in Aqueous Electrolyte, K. Nakamoto, R. Sakamoto, A. Kitajou, M. Ito, S. Okada, Evergreen, 4 (2017) 6-9.
Charge-discharge Characteristics of Li/CuCl2 Batteries with LiPF6/Methyl Difluoroacetate Electrolyte, K. Hashizaki, S. Dobashi, S. Okada, T. Hirai, J. Yamaki, Z. Ogumi, Evergreen, 6 (2019) 1-8.
Cathode Properties of Na3MPO4CO3 (M = Co/Ni) Prepared by a Hydrothermal Method for Na-ion Batteries, B. Xie, A. Kitajou, S. Okada, W. Kobayashi, M. Okada, T. Takahara, Evergreen, 6 (2019) 262-266.
Electrochemical Characterization, Structural Evolution and Thermal Stability of LiVOPO4 over Multiple Lithium Intercalations, A. Nojima, A. Sano, H. Kitamura, S. Okada, Evergreen, 6 (2019) 267-274.
O3-type Na(Fe1/3Mn1/3Co1/3)O2 as a Cathode Material with High Rate and Good Charge-discharge Cycle Performance for Sodium-ion Batteries, T. Tsubota, A Kitajou, S. Okada, Evergreen, 6 (2019) 275-279.
プロシーディングス
Monitoring Transition-metal Redox Potentials in Oxides by Lithium Insertion, K. S. Nanjundaswamy, A. K. Padhi, C. Masquelier, S. Okada, J. B. Goodenough, Proc. of the 37th Power Sources Conference, 184-187, (1996.01).
Li3Fe2(XO4)3 (X = P, As): Three Framework Structures as Hosts for the Reversible Insertion of Lithium, C. Masquelier, A. K. Padhi, K. S. Nanjundaswamy, S. Okada, J. B. Goodenough, Proc. of the 37th Power Sources Conference, 188-191, (1996.01).
Insertion of Lithium into Structures Containing Polyanions, J. B. Goodenough, A. K. Padhi, C. Masquelier, K. S. Nanjundaswamy, S. Okada, Second International Symp. on Lithium Batteries, S2, 3-4, (1996.09).
Characteristics of 3D Framework Cathodes with the (XO4)n- Polyanions, S. Okada, H. Arai, K. Asakura, Y. Sakurai, J. Yamaki, Second International Symp. on Lithium Batteries, 2I03, 19-20, (1996.09).
Potential and Thermodynamics of Graphite Anode, J. Yamaki, M. Egashira, S. Okada, Proc. the Second Japan-France Joint Seminar on Lithium Batteries, Morioka, Japan, 41-50, (1998.01).
Potential and Thermodynamics of Graphite Anode, J. Yamaki, M. Egashira, S. Okada, 1998 IAMS International Symp on Functional Materials, 42-51, (1998.07).
A Novel Method for the Measurement of Oxidation Potentials of Organic Electrolyte Used in Lithium Batteries, M. Egashira, H. Takahashi, S. Okada, J. Yamaki, 1998 IAMS International Symp. on Functional Materials, 74-77, (1998.07).
Potential and Thermodynamics of Graphite Anode, J. Yamaki, M. Egashira, S. Okada, Proc. of the 3rd Korea-Japan Joint Seminar on Advanced Batteries, 41-50, (1999.06).
Characteristics of 3D Cathode with Polyanions for Lithium Batteries, S. Okada, T. Takada, M. Egashira, J. Yamaki, M. Tabuchi, H. Kageyama, R. Kanno, Proc. of the 2nd Hawaii Battery Conference, 325-332, (1999.10).
Cathode Properties of NASICON-type LixM2(MoO4)3 for Lithium Secondary Batteries, S. Okada, T. Takada, M. Egashira, J. Yamaki, M. Tabuchi, H. Kageyama, T. Kodama, R. Kanno, Proc. of the International Symp. on Intercalation Compounds for Battery Materials, 99-24, 237-248, (1999.10).
The Possibility of Voltage Prediction from the Coulomb Potential Created by the Atoms of a Cathode Active Material for Li Ion Cells, J. Yamaki, M. Egashira, S. Okada, International Symp. on Rechargeable Lithium Batteries in Japan, 3I15, 83-84, (1999.11).
Thermal Stability of Materials in Lithium Ion Secondary Batteries, A. Kimura, M. Egashira, S. Okada, J. Yamaki, Proc. of the 1st Cross Straits Symp. on Materials, Energy and Environmental Sciences, EYP-8, 149-150, (1999.11).
Cathode Characteristics of Ferric Sulfate Derivatives for Lithium Secondary Batteries, T. Takada, S. Okada, M. Egashira, J. Yamaki, Proc. of the 1st Cross Straits Symp. on Materials, Energy and Environmental Sciences, EYP-9, 151-152, (1999.11).
The Possibility of Voltage Prediction from the Coulomb Potential Created by the Atoms of a Cathode Active Material for Li Ion Cells, J. Yamaki, M. Egashira, S. Okada, 13th IBA Marrakesh Symp., Abstract No.5, (1999.11).
Thermal Stability of Electrolytes Used in Lithium Ion Cells, J. Yamaki, A. Kimura, M. Egashira, S. Okada, The 3rd France-Japan Meeting on Lithium Batteries, Poster#15, (2000.05).
Thermal Stability of Fluorinated Ester Solvent Electrolytes for Li Cells, J. Yamaki, I. Yamazaki, M. Egashira, S. Okada, Proc. of the 3rd Hawaii Battery Conference, (2001.01).
The Possibility of Voltage Prediction from the Coulomb Potential Created by the Atoms of a Cathode Active Material for Li Ion Cells, J. Yamaki, M. Egashira, S. Okada, Lithium Battery Discussion, Bordeaux, France, #3, (2001.05).
Cathode Properties of Phospho-olivine LiMPO4 for Rechargeable Lithium Batteries, S. Okada, S. Sawa, Y. Uebo, M. Egashira, J. Yamaki, Lithium Battery Discussion, Bordeaux, France, #95, (2001.05).
Cathode Properties of LiCoPO4, S. Okada, J. Yamaki, Proc. of 2001 IAMS International Seminor, A-5, 35-41, (2001.11).
An Improved Performance of a LiFePO4 Cathode Material for Li-ion Batteries, Y. Chen, M. Ueno, N. Iltchev, S. Okada, J. Yamaki, Proc. of 2001 IAMS International Seminar, A-10, 67-75, (2001.11).
New Cathode Material Groups with Various Polyanions for Li and Post-Li Batteries, S. Okada, J. Yamaki, Proc. of the 1st Korea-Japan Joint Symp. on Energy and Environment, 71-72, (2001.12).
Advantages of Olivine-Type Cathodes for Lithium-Ion Batteries, S. Okada. Y. Chen, J. Yamaki, Proc. of the 5th SANKEN International Symp., P1-24, 84-85, (2002.03).
Anode Properties and Thermal Stability of LiPF6/Methyl Difluoroacetate Electrolyte, M. Ihara, K. Sato, I. Yamazaki, S. Okada, J. Yamaki, Proc. of the 4th Cross Straits Symp. on Materials, Energy and Environmental Sciences, 50-51, (2002.11).
Electrochemical Sodium Insertion into Polyanion Compounds, T. Kiyabu, I. Watanabe, M. Egashira, S. Okada, J. Yamaki, Proc. of the 4th Cross Straits Symp. on Materials, Energy and Environmental Sciences, 70-71, (2002.11).
Thermal Stability of LixCoO2 Cathode for Use in Li-ion Cells, J. Yamaki, Y. Baba, N. Katayama, M. Egashira, S. Okada, The 4th Japan-France Joint Seminar on Lithium Ion Batteries, Atami, (2002.11).
Thermal Stability of LixCoO2 Cathode in Li-ion Cell, J. Yamaki, Y. Baba, N. Katayama, M. Egashira, S. Okada, 7th Internationl Symp. on Advances in Electrochemical Science and Technology, Cennai India, (2002.11).
Electrochemical Sodium Insertion into the 3D Framework of Na3M2(PO4)3 (M = Fe, V), Y. Uebo, T. Kiyabu, S. Okada, J. Yamaki, The Reports of Institute of Advanced Material Study, 16, 1-5, (2002.12).
Thermal Studies of Methyl Difluoroacetate as a Novel Candidate for Electrolyte Solvent of Lithium-ion Cells, J. Yamaki, M. Ihara, S. Okada, Proceedings Electrochemical Society 20, 41-56, (2003.04).
Functionalized Tetraalkylammonium Ionic Liquid Electrolytes for Use in Lithium Batteries, M. Egashira, S. Okada, J. Yamaki, D. A. Dri, F. Bonadies, B. Scrosati, Extended Abstract of ECS Spring Meeting, Paris, (2003.04).
Thermal Stability of Methyl Difluoroacetate as a Novel Electrolyte Solvent for Lithium Batteries, J. Yamaki, T. Tanaka, M. Ihara, K. Sato, S. Okada, Lithium Battery Discussion 2003, Bordeaux, France, Sept. 14-19, (2003.09).
The Effect of Additives in Room Temperature Molten Salt-based Lithium Battery Electrolytes, M. Egashira, T. Kiyabu, I. Watanabe, S. Okada, J. Yamaki, The 5th Korea-Japan Joint Seminar on Advanced Batteries, Seoul, Sept. 25-26, (2003.09).
The Preparation and Electrochemical Performance of Iron/Nano-carbon Composites for Air Battery Anode, B. -T. Hang, M. Egashira, I. Watanabe, S. Okada, J. Yamaki, Proc. of the 5th Cross Straits Symp. on Materials, Energy and Environmental Engineering, Pusan, Korea, 161-162, (2003.10).
Structure and Cathode Properties of LiCoPO4 and Li2CoPO4F for High-voltage Li-ion Batteries, S. Okada, M. Ueno, Y. Uebo, J. Yamaki, INTELEC’03, Oct. 19-23, Yokohama, (2003.10).
Improvement of Thermal Stability of Lithium Ion Batteries by Using Methyl Difluoroacetate as an Electrolyte Solvent, J. Yamaki, M. Ihara, M. Egashira, S. Okada, INTELEC’03, Oct. 19-23, Yokohama, (2003.10).
Rate Capability of Nano-size LiCoO2 Cathode for Li-ion Cells, M. Makidera, T. Kawamura, S. Okada, J. Yamaki, Extended Abstract of the 206th Meetings of the Electrochemical Society, Hawaii, USA, #319, (2004.10).
New Method of Producing Nano-sized LiCoO2 Particles for Li-ion Batteries, T. Kawamura, M. Makidera, K. Koga, S. Okada, N. Miura, J. Yamaki, Extended Abstract of the 206th Meetings of the Electrochemical Society, Hawaii, USA, #320, (2004.10).
Inhibition of Aluminum Corrosion by LiN(SO2CF3)2/Methyl Difluoroacetate Electrolyte for Use in Li-ion Cells, J. Yamaki, T. Tanaka, I. Watanabe, M. Egashira, S. Okada, Extended Abstract of the 206th Meetings of the Electrochemical Society, Hawaii, USA, #334, (2004.10).
Thermal Stability and Electrochemical Properties of Eleectrodes in Ionic Liquid Electrolyte for Lithium Batteries, M. Nakagawa, M. Egashira, I. Watanabe, S. Okada, J. Yamaki, Extended Abstract of the 206th Meetings of the Electrochemical Society, Hawaii, USA, #429, (2004.10).
Electrochemical Properties of Iron-coated Carbon Materials for Iron-air Battery Anode, B. -T. Hang, M. Egashira, I. Watanabe, S. Okada, J. Yamaki, Extended Abstract of the 206th Meetings of the Electrochemical Society, Hawaii, USA, p.463, (2004.10).
New Simple Syntheses of Amorphous and Crystalline Iron Phosphate Cathodes, S. Okada, Y. Okazaki, T. Yamamoto, J. Yamaki, T. Nishida, Extended Abstract of the 206th Meetings of the Electrochemical Society, Hawaii, USA, #584, (2004.10).
Mössbauer Spectra of FePO4 Cathode for Lithium Ion Secondary Battery During the Cycling, T. Nishida, T. Yamamoto, S. Okada, J. Yamaki, Abstract of Eotvos Workshops inScience 2004, Budapest, Hungary, (2004.10).
Electrochemical Properties of Fe2O3-nano-loaded Carbon and Fe2O3-nano/Carbon Mixed Composites for Iron-air Battery Anodes, B. -T. Hang, M. Egashira, I. Watanabe, S. Hata, S. Okada, J. Yamaki, S. Yoon, Engineering Science Reports, Kyushu University, 27(1), (2005.06).
Lithium-ion Battery Containing FePO4 as a Cathode Material, T. Nishida, T. Nishizumi, T. Yamamoto, T. Shiratsuchi, S. Okada, J. Yamaki, Abstract of International Conference on the Applications of the Mössbauer Effect, Montpellier, France, (2005.09).
Mössbauer Study of FePO4 Cathode for Lithium- and Sodium-ion Batteries, T. Nishida, M. Tokunaga, T. Nishizumi, T. Yamamoto, T. Shiratsuchi, S. Okada, J. Yamaki, Abstract of Asia-Pacific Symposium on Radiochemistry 2005, Beijing, China (2005.10).
Mössbauer Study of New Cathode Material for Lithium-ion Batttery, T. Nishida, Y. Yoshida, Y. Takahashi, S. Okada, J. Yamaki, Abstract of 6th Workshop on Mössbauer Spectroscopy, Seeheim, Germany, (2005.10).
Cathode Properties of FePO4 for Li and Na Secondary Batteries, T. Shiratsuchi, S. Okada, J. Yamaki, T. Nishida, Proc. of the 7th Cross Straits Symposium on Materials, Energy and Environmental Sciences, EYP-32, p.199, (2005.11).
Electrochemical Splitting of LiF: A New Approach to Lithium-ion Battery Materials, N. Dimov, A. Kitajou, H. Hori, E. Kobayashi, S. Okada, ECS Transanctions, 58 (2013) 87-99, (2013.10).
High Performance Electrolyte Using Mixture of Ionic Liquid-solvent for Sodium-ion Batteries, L. T. M. Le, T. D. Vo, Q. D. Nguyen, S. Okada, F. Alloin, P. M. L. Le, ECS Transanctions, 85 (2018) 215, (2018.5).
Lithium-ion Batteries, Science and Technologies, Chap. 9 Polyanionic Cathode Active Materials, S. Okada, J. Yamaki, Springer-Verlag, p.195-205, (2009.1).
Advances in Cathode Active Materials for Li-ion Battery, S. Okada, Ceramic Materials in Energy Systems for Sustainable Development, Techna Group, p.173-192, (2009.6).
Lithium Ion Rechargable Batteries: Materials, Technology, and New Applications, Chap. 4 Iron-base Rare-metal-free Cathodes, S. Okada, J. Yamaki, Wiley-VCH, p.53-66, (2010.2).
Preparation of TiO2 Entrained CNT’s and Its Electrochemical Properties on the Li-ion and Na-ion Battery Systems, R. Miyamae, M. -H. Seo, Y. Ohata, K. Chihara, T. -G. Kim, J. Miyawaki, S. Okada, I. Mochida, S. -H. Yoon, Chemical Science & Engineering Series 3 Innovative Materials for Processes in Energy Systems, Touka Shobo, (2013) 531-536, (2013.9).
2006 Outstanding Paper Award, “The Preparation and Electrochemical Properties of Nano-sized Fe2O3-loaded Carbon for Air Battery Anode”, H. Hayashi, B. -T. Hang, S. Okada, J. Yamaki, 8th Cross Straits Symposium, 2006年11月.
2007 Outstanding Paper Award, “Mechanochemical Synthesis of NaMF3 (M = Fe, Mn, Ni) and Their Electrochemical Properties as Positive Electrode Materials for Rechargeable Batteries”, I. D. Gocheva, M. Nishijima, T. Doi, S. Okada, J. Yamaki, 9TH Cross Straits Symposium, 2007年11月.
第44回化学関連支部合同九州大会優秀研究発表賞, “MF3型正極におけるリチウムおよびナトリウム二次電池特性”, 西嶋学, I. D. Gocheva, 土井貴之, 岡田重人, 山木準一, 2007年7月7日.
H20九州大学研究・産学連携活動表彰, 岡田重人, 2008年11月1日.
Best Award of Outstanding Presenters at poster session, “Electrochmical Performance of Aqueous Rechargeable Lithium Ion Battery (ARLB) Based on LiFePO4 and LiTi2(PO4)3”, S. I. Park, T. Saito, T. Doi, Y. P. Wu, S. Okada, J. Yamaki, The 8th Mini International Symposium for Energy Conversion and Storage, 2009年3月19日.
ISAEST-9 Best Poster Award, “Electrochemical Properties of Monodisperse Nano-size LiMnPO4 and LiFePO4 Perpared by Liquid Phase Synthesis Method”, K. Chihara, T. Doi, S. Yatomi, S. Okada, J. Yamaki, H-003, Abstracts of 9th International Symposium on Advances in Electrochemical Science and Technology, Chennai, 2010年12月2-4日.
CSE2012第10回大会Best Poster Award, “Thermal Properties of Hard Carbon Type Anodes for Na-Ion Battery”, J. Zhao, L. Zhao, K. Chihara, S. Okada, S. Matsumoto, S. Kuze, K. Nakane, 2012年11月25日.
IBA (International Battery Materials Association) Technology Award, “for Outstanding Contributions to the Development of Iron- and Vanadium-based Electrode Materials for the Lithium Battery Industry”, S. Okada, 2013年3月13日.
MRS of India Prize for Best Poster Paper, “Energy-Savvy Synthesis of Ti-Based Anodes for Li-ion Batteries”, S. Ghosh, Y. Kee, S. Okada, P. Barpanda, 2015年2月9-11日.
19th CSS-EEST Certificate of Award, “Synthesis and Electrochemical Properties of Polyanionic Composite Cathodes for Lithium-ion Batteries”, 塩塚研太, 喜多條鮎子, 岡田重人, 2017年12月1日.
電気化学会論文賞, “Effect of Concentrated Electrolyte on Aqueous Sodium-ion Battery with Sodium Manganese Hexacyanoferrate Cathode”, 中本康介, 坂本 遼, 伊藤正人, 喜多條鮎子, 岡田重人, 2018年3月10日.
2018 IMCE International Symposium Best Poster Award, “Na3MnPO4CO Carbonphosphate Cathode for Na-ion Battery”, 謝宝偉, 喜多條鮎子, 岡田重人, 2018年3月16日.
Battery Including Vanadium Pentoxide Base Amorphous Cathode Active Material, 桜井庸司, 平井敏郎, 岡田重人, 岡田武司, 山木準一, 大塚秀昭, 米国特許 USP 4675260, 1985年11月8日出願, 1987年11月8日登録.
Cathode Material and Secondary Battery Using the Same, 岡田重人, 大塚秀昭, 荒井創, 柴田昌司, 市村雅弘, 加国特許 2107440, 1993年9月30日出願, 1998年6月23日登録.
Battery Including Vanadium Pentoxide Base Amorphous Cathode Active Material, 桜井庸司, 平井敏郎, 岡田重人, 岡田武司, 山木準一, 大塚秀昭, 独国特許 3540074, 1985年11月8日出願, 1988年9月8日登録.
Battery Including Vanadium Pentoxide Base Amorphous Cathode Active Material, 桜井庸司, 平井敏郎, 岡田重人, 岡田武司, 山木準一, 大塚秀昭, 加国特許 1265842, 1985年11月12日出願, 1990年2月13日登録.
Battery Including Vanadium Pentoxide Base Amorphous Cathode Active Material, 桜井庸司, 平井敏郎, 岡田重人, 岡田武司, 山木準一, 大塚秀昭, 仏国特許 2573250, 1985年11月12日出願, 1990年12月21日登録.
Cathode Material and Secondary Battery Using the Same, 岡田重人, 大塚秀昭, 荒井創, 柴田昌司, 市村雅弘, 独仏国特許 EP 592301B1, 1993年10月5日出願, 1995年1月22日登録.
Cathode Material and Secondary Battery Using the Same, 岡田重人, 大塚秀昭, 荒井創, 柴田昌司, 市村雅弘, 米国特許 USP 5415957, 1993年10月1日出願, 1995年5月16日登録.
A Method for Producing Positive Electrode Material and Lithium Batteries Incorporating This Material, 荒井創, 岡田重人, 桜井庸司, 山木準一, 加国特許 2175856, 1996年5月6日出願, 2000年1月18日登録.
Material for Use in the Positive Electrodes of Lithium Batteries, Its Manufacture, and Lithium Batteries Incorporating This Material, 荒井創, 岡田重人, 桜井庸司, 山木準一, 米国特許 USP 5695893, 1996年5月6日出願, 1997年12月9日登録.
Negative Electrode Material for Use in Lithium Secondary Batteries, Its Manufacture, and Lithium Secondary Batteries Incorporating This Material, 正代尊久, 岡田重人, 鳶島真一, 山木準一, 米国特許 USP 5834139, 1996年7月1日出願, 1998年11月10日登録.
Negative Electrode Material for Use in Lithium Secondary Batteries, Its Manufacture, and Lithium Secondary Batteries Incorporating This Material, 正代尊久, 岡田重人, 鳶島真一, 山木準一, 欧州特許 EP 0752728, 1996年7月1日出願, 2000年1月12日登録.
Negative Electrode Material for Use in Lithium Secondary Batteries, Its Manufacture, and Lithium Secondary Batteries Incorporating This Material, 正代尊久, 岡田重人, 鳶島真一, 山木準一, 加国特許 2180300, 1996年7月2日出願, 2000年2月15日登録.
A Method for Producing Positive Electrode Material and Lithium Batteries Incorporating This Material, 荒井創, 岡田重人, 桜井庸司, 山木準一, 欧州特許EP 0743692, 1996年5月14日出願, 2000年8月16日登録.
Method of Producing Secondary Battery anode Material and Secondary Battery, 八田直樹, 岡田重人, 山木準一, JP0207779, 2001年7月31日出願, 2004年3月5日登録.
Characteristics of New Low-cost High-voltage Cathode, Fe2(SO4)3, 183rd Meeting of the Electrochemical Society, Hawaii, 1993年5月20日.
Low-Cost High-Voltage Cathodes for Li Secondary Batteries, Corrosion Research Center Seminar at University of Minnesota, Minneapolis, 1994年8月15日.
Characteristics of 3D Framework Cathodes with the (XO4)n- Polyanions, The 2nd International Symp. on Lithium Batteries, 東京, 1996年9月26日.
Characteristics of 3D Cathode with Polyanions for Lithium Batteries, The 2nd Hawaii Battery Conference, Hawaii, 1999年1月6日.
Cathode Properties of LiCoPO4, 7th IAMS International Symp. (Materials for Use in Lithium Batteries), 福岡, 2001年11月26日.
New Cathode Material Groups with Various Polyanions for Li and Post Li Batteries, The 1st Korea-Japan Joint Symp. on Energy and Environment, 韓国大田, 2001年12月13〜14日.
Advantages of Olivine-Type Cathodes for Lithium-Ion Batteries, 大阪大学産業科学研究所第5回国際シンポジウム, 茨木, 2002年3月14〜15日.
New Simple Syntheses of Amorphous and Crystalline Iron Phosphate Cathodes, ECS 2004 Joint International Meeting, Hawaii, 2004年10月5日.
Synthesis/Structure and Cathode Properties of Li2CoPO4F for High-Voltage Li-Ion Batteries, NMS-III, 上海, 2007年10月19日.
Fluorides as Post-Olivine Cathode for Li-Ion Batteries, ICFMD 2008, Kuala Lumpur, Malaysia, 2008年6月16〜19日.
Advances in Cathode Active Materials for Li-Ion Battery, Forum 2008 of World Academy of Ceramics, Chianciano Terme, Itary, 2008年 7月7日.
Cathode Active Materials for Sodium Secondary Battery, ICEPS-2008, Mascot Hotel, Thiruvananthapuram, 2008年11月26~28日.
Cathode Active Materials for Post Lithium Ion Battery, 2nd Interntional Symp. of Novel Carbon Resource Sciences, Bandung, Indonesia, 2009年3月10~11日.
Cathode Active Materials for Sodium-Ion Battery, The 4th Southern China Li-Ion Battery Top Forum (CLTF 2009), Shenzhen, China, 2009年5月23〜24日.
Eco-Friendly Cathode Active Materials for Sodium Secondary Battery, ACTSEA-2009, Taipei, Taiwan, 2009年11月1~4日.
Post Li-Ion Batteries, Samsong技術講演, Samsong SDI, 水原, 韓国, 2010年1月7日.
Solid State and Aqueous Li-Ion Batteries with Polyanionic Electrode Active Materials, S. Okada, S. Park, E. Kobayashi, J. Yamaki, CIMTEC2010, 2010年6月14日.
All-Solid-State Sodium-Ion Symmetric Battery with NASICON Type Compounds, 218th ECS Meeting, 2010年10月14日.
All-Solid-State Sodium-Ion Symmetric Battery Based on NASICON-Related Compounds, ICC-3, 2010年11月16日.
All NASICON Solid-State Symmetric Batteries, ISAEST-9, 2010年12月2〜4日.
Necessity and Possibility of Sodium-Ion Battery, The 9th International Meeting of Pacific Rim Ceramic Societies, 2011年7月10〜14日.
Anode Properties of NASICON-Type NaTi2(PO4)3 for Aqueous Sodium-Ion Batteries, ACEPS-6, 2012年1月5〜8日.
Present Situation of Secondary Battery, JICA太陽光エネルギー発電技術コース, 九大筑紫C-cube, 2012年4月3日.
Aqueous Na-ion Battery with NASICON-Type Anode, 10th ISE Spring Meeting, Perth, 2012年4月15〜18日.
Electrochemical Properties of Disodium Rhodizonate Cathode for Sodium Secondary Batteries, 63rd ISE Annual Meeting, Prague, 2012年8月19〜24日.
Aqueous Sodium-Ion Battery as a Post Li-Ion Battery, 5th International Conference on Advanced Lithium Batteries for Automibile Applications, Istanbul, 2012年9月17〜20日.
Alternative Answers to Li-Ion Battery, IUMRS-International Conference on Electronic Materials (IUMRS-ICEM 2012), Yokohama, 2012年9月23〜28日.
Sodium-Ion Battery as a Post Lithium-Ion Battery, CSE2012, Guangzhou, 2012年11月25日.
Alternative Secondary Batteries as Post Li-Ion Battery, ICAMN-2012, Hanoi, 2012年12月14日.
Aqueous Secondary Batteries as Post Lithium-Ion batteries, IBA2013, Barcelona, 2013年3月15日.
Present Situation of Secondary Battery, JICA太陽光エネルギー発電技術コース, 九大筑紫先導研, 2013年4月8日.
Conversion-Type Cathodes with Low Cost and Large Capacity, The 2nd International Symposium on New Generation Batteries for Automobile, 大阪リーガロイヤルNCB, 2013年10月10日.
Post Lithium-Ion Batteries with Phosphate Electrodes, ACTSEA-2013, 台北, 2013年11月10〜13日.
Sodium-ion Batteries with Phosphate Electrodes, ACEPS-7, 大阪, 2013年11月24〜27日.
Grand Design of Post Lithium-Ion Battery, 2nd Frontier Chemistry Center International Symposium, 札幌, 2013年12月9〜10日.
State-of-the-art Na-ion Batteries as the Post Li-ion Battery, IUMRS-ICA2013, Bangalore, 2013年12月16〜20日.
Grand Design of High Cost Performance Batteries, Samsung技術講演会, ソウル, 2014年1月6〜7日.
Eco-Friendly Conversion-Type Cathodes with Large Capacity, IBA2014, Brisbane, 2014年3月3〜7日.
Approach to Large-Scale Batteries for Power Grid, 1st Symposium of First Symposium of Research and Education Center for Advanced Energy Materials, Devices, and Systems, 筑紫, 2014年3月13日.
Past, Present and Future of Li-ion Battery, JICA研修太陽光発電技術コース, JICA九州セミナールーム, 2014年4月28日.
High Cost Performance Cathodes for Large Scale Rechargeable Batteries, 6th Forum on New Materials, Montecatini Terme, 2014年6月16〜19日.
Oxocarbonic Acid-type Organic Electrode Active Materials for Sodium-ion Battery, ABAA-7, 奈良, 2014年7月30日〜8月1日.
Disodium Rhodizonate and the Derivatives as Organic Electrode Active Materials for Sodium-ion Battery, The 10th Japan-France Joint Seminar on Battery, 箱根, 2014年9月22〜24日.
Iron-Based Conversion-Type Cathodes for Na-Ion Battery, ICAMN2014, Hanoi, 2014年10月29日〜11月1日.
Aqueous Sodium-ion Battery as Post Lithium-ion Battery, The first Joint Symposium of Kyushu University and Yonsei University on Materials Science and Chemical Engineering (SKY-1), 筑紫, 2015年2月5〜6日.
Past, Present and Future of Li-ion Battery, JICA研修太陽光発電技術コース, 九大筑紫先導研, 2015年4月1日.
Aqueous Sodium-Ion Battery with High Cost Performance, ICMAT2015 & IUMRS-ICA2015, Singapore, 2015年6月28日〜7月3日.
Research trend from Li-ion battery to post Li-ion batteries, 江西特電特別講演, 中国江西省, 2015年8月31日.
Composite Cathodes with Lithium Fluoride for Li-ion Batteries, ACTSEA2015, National Cheng Kung University, 2015年11月9〜11日.
Composite Cathodes with LiF/NaF for Li/Na-ion Batteries, ICACC2016, Daytona Beach, 2016年1月24〜29日.
Composite Cathodes as a Substitute Cathode, IBA2016, Nante, 2016年3月20〜25日.
Possibility of Composite Cathodes with Sacrificial Salts, IMLB2016, Chicago, 2016年6月19〜24日.
All-Solid-State Sodium-Ion Battery with Nasicon, PRiME2016, Honolulu, 2016年10月2〜7日.
All Solid-State Sodium-ion Battery Made from a Single NASICON Compound, ISAEST-11, Chennai, 2016年12月8〜10日.
High Concentrated Electrolyte Effects in Aqueous Sodium-ion Battery, IBA2017, Nara, 2017年3月5〜10日.
Concentrated Electrolyte Effects in Aqueous Na-ion Battery, NMEC-3, Ho Chi Minh City, 2017年5月3〜6日.
Electrochemical Window Enlargement Effect on NaClO4 Concentration in Aqueous Na-ion Battery, ACEPS-9, Gyeongju, 2017年8月20〜23日.
Performance of Aqueous Mg-ion Battery with MgMnO2 Cathode and Organic Anode, INaB2017, 東京理科大, 2017年11月28〜30日.
Electrochemical Properties of Highly Concentrated Aqueous Na-ion Battery, CIMTEC2018, 8th Forum on New materials, Session FD-1, Perugia, 2018年6月10〜14日.
High Voltage Aqueous Sodium-ion Battery with Prussian Blue Analogues, CMCEE2018, T1-S7, Singapore, 2018年7月22〜27日.
2 V Class Organic Na-ion Battery by Concentrated Aqueous Electrolyte, 第12回日仏電池セミナー, 長良川国際会議場, 2018年9月19〜21日.
Aqueous Na-ion Battery as Post Li-ion Battery, 延世大-九大Symposium, 九大, 2019年1月24日.
High Voltage Sodium-ion Battery by Concentrated Aqueous Electrolyte, 統合物質創製化学研究推進機構, 国際シンポジウム, 京大化学研究所おうばくプラザ, 2019年1月25〜26日.
High Voltage Aqueous Sodium-ion Battery, 2019 Advanced Energy Materials and Membrane Technology Symposium, 中原大, 2019年5月27日.
High Voltage Sodium and Potasium-ion Batteries by Concentrated Aqueous Electrolytes, GFMAT-2, G8, Toronto, 2019年7月21〜26日.
Post Li-ion Batteries with Concentrated Aqueous Electrolyte, ICAMN-2019, ハノイ工科大, 2019年10月15日.
High Voltage Aqueous Na/K-ion Batteries, ICEnSM 2019, 深セン清華大, 2019年12月1日.
Composite Cathodes with Sacrificial Salt by Mechanical Ball Milling, MRM2021, パシフィコ横浜ノース, 2021年12月14日.
Past, Present and Future of Li-ion Battery, JICA研修太陽光発電技術コース, JICA九州セミナールーム, 2022年2月10日.