Kyushu University Academic Staff Educational and Research Activities Database
List of Papers
Shigeto Okada Last modified date:2019.06.28

Professor / Department of Advanced Device Materials / Institute for Materials Chemistry and Engineering


Papers
1. Ayuko Kitajou, Yuji Ishado, Atsushi Inoishi, Shigeto Okada, Amorphous xLiF-FeSO4 (1 ≤ x ≤ 2) composites as a cathode material for lithium ion batteries, Solid State Ionics, 10.1016/j.ssi.2018.09.007, 326, 48-51, 2018.11, Although the synthesis is not so easy, LiFeSO4F, a high-voltage iron-based cathode, is attractive by virtue of its low cost and small environmental impact. We prepared amorphous xLiF-FeSO4 (1 ≤ x ≤ 2) using the dry ball-milling method. Moreover, we succeeded to synthesize tavorite-type LiFeSO4F by sintering amorphous LiF-FeSO4 at 280 °C. Amorphous 1.3LiF-FeSO4 exhibited the highest reversible capacity, of about 130 mAh g−1, among all the xLiF-FeSO4 series (1 ≤ x ≤ 2), with an average voltage of 3.5 V. In addition, we found that the obtained amorphous xLiF-FeSO4 cathodes have excellent cyclability and rate capability, also..
2. Atsushi Inoishi, Akira Nishio, Ayuko Kitajou, Shigeto Okada, Single-phase All-solid-state Silver Battery using Ag1.5Cr0.5Ti1.5(PO4)3 as Anode, Cathode, and Electrolyte, ChemistrySelect, 10.1002/slct.201802387, 3, 34, 9965-9968, 2018.09, An all-solid-state silver battery made from a single material is reported. NASICON-type Ag1.5Cr0.5Ti1.5(PO4)3 functioned as the anode, cathode, and electrolyte. High rate capability at 298 K and low temperature operation (233 K) were possible due to its high electrical conductivity and low interfacial resistance with the concept of a single-phase battery. The redox reactions of Ag/Ag+ (anode) and Cr3+/Cr4+ (cathode) were confirmed from X-ray diffraction and X-ray photoelectron spectroscopy measurements. The operating voltage of the battery in this study was higher than that for a silver battery using an AgI solid electrolyte because of the high redox potential of the cathode and the wider potential window of Ag1.5Cr0.5Ti1.5(PO4)3 than that of AgI. Therefore, Ag1.5Cr0.5Ti1.5(PO4)3-based single-phase battery is a promising new concept to obtain a high voltage silver-ion battery, high-rate capability and low temperature operation..
3. Ying Ching Lu, Nikolay Dimov, Shigeto Okada, Thi Hang Bui, SnSb alloy blended with hard carbon as anode for na-ion batteries, Energies, 10.3390/en11061614, 11, 6, 2018.06, SnSb binary alloys blended with reduced graphene oxide (SnSb/RGO) or mixtures of SnSb/RGO with hard carbon (SnSb/RGO+HC) were tested as anode materials for sodium-ion batteries. The presence of hard carbon in the SnSb/RGO+HC blend improves its cycle efficiency and rate performance substantially. The synergy between the SnSb/RGO and the hard carbon phase is explained by the buffer action of the hard carbon, preventing SnSb interparticle agglomeration during the repeated recharge cycles. The feasibility of SnSb alloy anode for sodium-ion batteries was confirmed in full cell configuration vs. Na3V2(PO4)2F3 cathode..
4. Atsushi Inoishi, Akira Nishio, Yuto Yoshioka, Ayuko Kitajou, Shigeto Okada, A single-phase all-solid-state lithium battery based on Li1.5Cr0.5Ti1.5(PO4)3 for high rate capability and low temperature operation, Chemical Communications, 10.1039/c8cc00734a, 54, 25, 3178-3181, 2018.01, We report a battery made from a single material using Li1.5Cr0.5Ti1.5(PO4)3 as the anode, cathode and electrolyte. A high rate capability at room temperature and very low-temperature operation (233 K) were possible as a result of the superior ionic conductivity and low interfacial resistance obtained from the single-phase cell design..
5. Masaya Fujioka, Chuanbao Wu, NNaoki Kubo, Gaoyang Zhao, Atsushi Inoishi, Shigeto Okada, Satoshi Demura, Hideaki Sakata, Manabu Ishimaru, Hideo Kaiju, Junji Nishii, Proton-Driven Intercalation and Ion Substitution Utilizing Solid-State Electrochemical Reaction, J. Am. Chem. Soc., 139, 49, 17987-17993, 2017.11.
6. Liwei Zhao, Ayuko Kitajou, Shigeto Okada, Thermal Characteristics of Conversion-type FeOF Cathode in Li-ion Batteries, Batteries, 3, 4, 2017.10.
7. Atsushi Inoishi, Takuya Omuta, Yuto Yoshioka, Eiji Kobayashi, Ayuko Kitajou, Shigeto Okada, Single-Phase All-Solid-State Lithium-Ion Battery Using Li3V2(PO4)3 as the Cathode, Anode, and Electrolyte, ChemistrySelect, 2, 26, 7925-7929, 2017.09.
8. Ayuko Kitajou, Ichiro Tanaka, Yo Tanaka, Eiji Kobayashi, Hiroyuki Setoyama, Toshihiro Okajima, Shigeto Okada, Discharge and Charge Reaction of Perovskite-type MF3 (M = Fe and Ti) Cathode for Li-ion Batteries, Electrochemistry, 85, 8, 472-477, 2017.08.
9. Ayuko Kitajou, Yuji Ishado, Takahiro Yamashita, Hiroyosi Momida, Tamio Oguchi, Shigeto Okada, Cathode properties of perovskite-type NaMF3 (M = Fe, Mn, and Co) prepared by mechanical ball milling for sodium-ion battery, Electrochim. Acta, 245, 424-429, 2017.08.
10. Atsushi Inoishi, Yuto Yoshioka, L.iwei Zhao, Ayuko Kitajou, Shigeto. Okada, Improvement in the Energy Density of Na3V2(PO4)3 by Mg Substitution, ChemElectroChem, 4, 11, 2755-2759, 2017.08.
11. Kosuke Nakamoto, Ryo Sakamoto, Masato Ito, Ayuko Kitajou, Shigeto Okada, Effect of Concentrated Electrolyte on Aqueous Sodium-ion Battery with Sodium Manganese Hexacyanoferrate Cathod, Electrochemistry, 85, 4, 179-185, 2017.04.
12. Atsushi Inoishi, Takuya Omuta, Eiji Kobayashi, Ayuko Kitajou, Shigeto Okada, A Single-Phase, All-Solid-State Sodium Battery Using Na3−xV2−xZrx(PO4)3 as the Cathode, Anode, and Electrolyte, Advanced Materials Interfaces, 4, 5, 1166942(1-5), 2017.03.
13. Kuniko Chihara, Masato Ito, Ayuko Kitajou, Shigeto Okada, Cathode Property of Na2CxOx [x = 4, 5, and 6] and K2C6O6 for Sodium-ion Batteries, Evergreen, 4, 1, 1-5, 2017.03.
14. Kosuke Nakamoto, Ryo Sakamoto, Ayuko Kitajou, Masato Ito, Shigeto Okada, Cathode Properties of Sodium Manganese Hexacyanoferrate in Aqueous Electrolyte, Evergreen, 4, 1, 6-9, 2017.03.
15. Yongho Kee, Nikolay Dimov, S. Champet, D.H. Gregory, Shigeto Okada, Investigation of Al-doping effects on the NaFe0.5Mn0.5O2 cathode for Na-ion batteries, Ionics, 22, 11, 2245-2248, 2016.11.
16. Yongho Kee, Nikolay Dimov, Aleksandar Staykov, Shigeto Okada, Insight into Mg-doping effects on Na3Ni2SbO6 cathode host for Na-ion batteries, Materials Letters, 183, 187-190, 2016.11.
17. Kosuke Nakamoto, Yusuke Kano, Ayuko Kitajou, Shigeto Okada, Electrolyte dependence of the performance of a Na2FeP2O7//NaTi2(PO4)3 rechargeable aqueous sodium-ion battery, Journal of Power Sources, 327, 327-332, 2016.09.
18. Ayuko Kitajou, Kosuke Tanaka, Hidenori Miki, Hideyuki Koga, Toshihiro Okajima, Shigeto Okada, Improvement of Cathode Properties by Lithium Excess in Disordered Rocksalt Li2+2xMn1−xTi1−xO4, Electrochemistry, 84, 8, 597-600, 2016.08.
19. Hongyu Fan, Xiaoqing Li, Huiqiu He, Na Peng, Ying Han, Zhen Liu, Mingjiong Zhou, Liwei Zhao, Shigeto Okada, Electrochemical Properties and Thermal Stability of Silicon Monoxide Anode for Rechargeable Lithium-Ion Batteries, Electrochemistry, 84, 8, 574-577, 2016.08.
20. Zhen Liu, Shaojie Han, Chong Xu, Yuwen Luo, Na Peng, Chenyang Qin, Mingjiong Zhou, Wenqin Wang, Liwei Chen, Shigeto Okada, In situ crosslinked PVA–PEI polymer binder for long-cycle silicon anodes in Li-ion batteries, RSC Advances, 6, 68371-68378, 2016.07.
21. Yongho Kee, Nikolay Dimov, Aleksandar Staykov, Shigeto Okada, Investigation of metastable Na2FeSiO4 as a cathode material for Na-ion secondary battery, Materials Chemistry and Physics, 171, 45-49, 2016.03.
22. Mingjiong Zhou, Na Peng, Zhen Liu, Yun Xi a, Huiqiu He, Yonggao Xia, Zhaoping Liu, Shigeto Okada, Synthesis of sub-10 nm copper sulphide rods as high-performance anode for long-cycle life Li-ion batteries, Journal of Power Sources, 306, 408-412, 2016.02.
23. Ayuko Kitajou, Jun Yoshida, Shinji Nakanishi, Yasuaki Matsuda, Ryoji Kanno, Toshihiro Okajima, Shigeto Okada, Capacity Improvement by Deficit of Transition Metals in Inverse Spinel LiNi1/3Co1/3Mn1/3VO4 Cathodes, Journal of Power Sources, 302, 240-246, 2016.01.
24. Hiroyoshi Momida, Ayuko Kitajou, Shigeto Okada, Tomoki Yamashita, Tamio Oguchi, Discharge Reaction Mechanisms in Na/FeS2 Batteries: First-Principles Calculations, Journal of the Physical Society of Japan, 84, 12, 124709-1-124709-6, 2015.11.
25. 堀 博伸, Shigeto Okada, Reconversion Reaction of LiF/Fe Composite Thin Film Cathodes for Lithium-Ion Battery, Electrochemistry, 83, 10, 909-913, 2015.10.
26. Ayuko Kitajou, Eiji Kobayashi, Shigeto Okada, Electrochemical Performance of a Novel Cathode Material “LiFeOF” for Li-ion Batteries, Electrochemistry, 83, 10, 885-888, 2015.10.
27. Zhen Liu, Yuwen Luo, Mingjiong Zhou, Wenpin Wang, Ning Gan, Shigeto Okada, Jun-ichi Yamaki, Enhanced Performance of Yolk-Shell Structured Si-PPy Composite as an Anode for Lithium Ion Batteries , Electrochemistry, 83, 12, 1067-1070, 2015.10.
28. Yongho Kee, DIMOV NIKOLAY KIRILOV, Keita Minami, Shigeto Okada, Orthorhombic Lithium Titanium Phosphate as an Anode Material for Li-ion Rechargeable Battery, Electrochim. Acta, 10.1016/j.electacta.2015.06.032, 174, 516-520, 2015.08.
29. Prabeer Barpanda, Debasmita Dwibedi, Swatilekha Ghosh, Yongho Kee, Shigeto Okada, Lithium metal borate (LiMBO3) family of insertion materials for Li-ion batteries: a sneak peak, IONICS, 10.1007/s11581-015-1463-6, 21, 7, 1801-1812, 2015.07.
30. Swatilekha Ghosh, Yongho Kee, Shigeto Okada, Prabeer Barpanda, Energy-savvy Solid-state and Sonochemical Synthesis of Lithium Sodium Titanate as an Anode Active Material for Li-ion Batteries, J. Power Sources, 296, 276-281, 2015.07.
31. Ying-Ching Lu, Chuze Ma, Takafumi Kidera, DIMOV NIKOLAY KIRILOV, Ying Shirley Meng, Shigeto Okada, Electrochemical properties of tin oxide anodes for sodium-ion batteries, JOURNAL OF POWER SOURCES, 10.1016/j.jpowsour.2015.03.042, 284, 287-295, 2015.06.
32. Ying-Ching Lu, Chuze Ma, Judith Alvarado, DIMOV NIKOLAY KIRILOV, Ying Shirley Meng, Shigeto Okada, Improved electrochemical Performance of Tin-sulfide Anodes fer Sodium-ion Batteries, J. Mater. Chem. A, 3, 16971-16977, 2015.06, スズ硫化物は、その大きな可逆容量のため、LiのみならずNaイオン電池用負極として注目される。Naイオン電池用スズ硫化物負極の電気化学的性能を改善するため、三種の異なるSnS/炭素複合負極をメカニカルミリング法で作製した。充放電過程でのコンバージョンおよび合金化反応機構は、TEMにより明らかにされた。 さらにSnS負極の実現可能性を実証するため、Na3V2(PO4)2F3正極を用いたNaイオンフルセル構成で良好な電池特性が確認された。.
33. Yongho Kee, DIMOV NIKOLAY KIRILOV, Aleksandar Tsekov Staykov, Prabeer Barpanda, Ying-Ching Lu, Keita Minami, Shigeto Okada, Insight into the limited electrochemical activity of NaVP2O7, RSC ADVANCES, 10.1039/c5ra12158b, 5, 80, 64991-64996, 2015.06.
34. Yongho Kee, DIMOV NIKOLAY KIRILOV, Eiji Kobayashi, Ayuko Kitajou, Shigeto Okada, 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, 272, 138-143, 2015.03.
35. Jun-ichi Yamaki, Yohei Shinjo, Takayuki Doi, Shigeto Okada, Zempachi Ogumi, The Rate Equation of Decomposition for Electrolytes with LiPF6 in Li-Ion Cells at Elevated Temperatures, JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 10.1149/2.0161504jes, 162, 4, A520-A530, 2015.01.
36. Jun-ichi Yamaki, Yohei Shinjo, Takayuki Doi, Shigeto Okada, The Rate Equation for Oxygen Evolution by Decomposition of LixCoO2 at Elevated Temperatures, JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 161, A1648-A1654, 2014.11.
37. Zhou Mingjiong, ZHAO LI WEI, Shigeto Okada, Jun-ichi Yamaki, Quantitative studies on thermal stability of a FeF3 cathode in methyl difluoroacetate-based electrolyte for Li-ion batteries, JOURNAL OF POWER SOURCES, 10.1016/j.jpowsour.2013.12.026, 253, 74-79, 2014.05.
38. Ayuko Kitajyou, Junpei Yamaguchi, Satoshi Hara, Shigeto Okada, Discharge/charge reaction mechanism of a pyrite-type FeS2 cathode for sodium secondary batteries, JOURNAL OF POWER SOURCES, 10.1016/j.jpowsour.2013.08.123, 247, 391-395, 2014.02.
39. Tetsu Ichitsubo, Takayuki Doi, Kazuya Tokuda, Riichiro Matsubara, Tetsuya Kida, Tomoya Kawaguchi, Shunsuke Yagi, Shigeto Okada, Jun-ichi Yamaki, What determines the critical size for phase separation in LiFePO4 in lithium ion batteries?, J. Materials Chem., 1, 14532-14537, 2014.02.
40. Shiro Kubuki, Hitomi Masuda, Koken Matsuda, Kazuhiko Akiyama, Ayuko Kitajou, Shigeto Okada, Péter Zsabka, Zoltán Homonnay, Ernõ Kuzmann, Tetsuaki Nishida, Mössbauer Study of New Vanadate Glass with Large Charge-Discharge Capacity, Hyperfine Interact, 226, 765-770, 2014.02.
41. Jie Zhao, Jing Xu, Dae Hoe Lee, DIMOV NIKOLAY KIRILOV, Ying Shirley Meng, Shigeto Okada, Electrochemical and Thermal Properties of P2-type Na2/3Fe1/3Mn2/3O2 for Na-Ion Batteries, J. Power Sources, 264, 235-239, 2014.01.
42. Ayuko Kitajou, Hideyuki Komatsu, Rintaro Nagano, Shigeto Okada, Synthesis of FeOF Using Roll-Quenching Method and the Cathode Properties for Lithium-Ion Battery, J. Power Sources, in press, 2013.08.
43. Jie Zhao, ZHAO LI WEI, Kuniko Chihara, Shigeto Okada, Jun-ichi Yamaki, Shingo Matsumoto, Satoru Kuze, Kenji Nakane, Electrochemical and Thermal Properties of Hard Carbon-Type Anodes for Na-Ion Batteries, J. Power Sources, in press, 2013.08.
44. Ayuko Kitajou, Jun Yoshida, Shinji Nakanishi, Shigeto Okada, Jun-ichi Yamaki, Cathode Properties of Mn-doped Inverse Spinels for Li-Ion Battery, J. Power Sources, in press, 2013.07.
45. Eiji Kobayashi, Ayuko Kitajou, Shigeto Okada, Jun-ichi Yamaki, Improvement of Soled-State Symmetric Cell Performance with Lithium Vanadium Phosphate, J. Power Sources, in press, 2013.07.
46. Lewei Zhao, Shigeto Okada, Jun-ichi Yamaki, Effect of VC Additive on MFA-Based Electrolyte in Li-Ion Battries, J. Power Sources, in press, 2013.07.
47. Yusuke Kawano, Ayuko Kitajou, Shigeto Okada, Synthesis and Cathode Properties of a Cubic Rocksalt-Type Si-Doped Li2NiTiO4 for Lithium-Ion Batteries, J. Power Sources, in press, 2013.07.
48. Kuniko Chihara, Nobuhito Chujo, Ayuko Kitajou, Shigeto Okada, Cathode Properties of Na2C6O6 for Sodium-Ion Batteries, Electrochim. Acta, in press, 2013.07.
49. Nikolay Dimov, Akihiro Nishimura, Kuniko Chihara, Ayuko Kitajou, Irina D. Gocheva, Shigeto Okada, 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, Electrochim. Acta, in press, 2013.07.
50. Yoshinori Noguchi, Eiji Kobayashi, Larisa S. Plashnitsa, Shigeto Okada, Jun-ichi Yamaki, Fabrication and Performance of All Solid-State Symmetric Sodium Battery Based on NASICON-Related Compounds, Electrochimica Acta, 101, 59-65, 2013.06.
51. Jie Zhao, Lewei Zhao, Nikolay Dimov, Shigeto Okada, Tetsuaki Nishida, Electrochemical and Thermal Properties of α-NaFeO2 Cathode for Na-Ion Batteries, J. Electrochem. Soc., 160, A3077-A3081, 2013.04.
52. Shigeto Okada, Research and Development of High-Capacity, High-Voltage Fluoride-Type Cathode Active Materials, Novel Cabon Resources Sciences NEWSLETTER, 8, 9-12, 2013.03.
53. Kuniko Chihara, Ayuko Kitajou, Irina D. Gocheva, Shigeto Okada, Jun-ichi Yamaki, Cathode Properties of Na3M2(PO4)2F3 [M = Ti, Fe, V] for Sodium-Ion Batteries, J. Power Sources, 227, 80-85, 2013.02.
54. Shigeto Okada, Invention of Eco-Friendly Post Li-Ion Secondary Batteries, Novel Cabon Resources Sciences NEWSLETTER, 7, 29-34, 2012.08.
55. Hiroki Kitamura, Lewei Zhao, B. -T. Hang, Shigeto Okada, Jun-ichi Yamaki, Effect of Charge Current Density on Electrochemical Performance of Fe/C Electrodes in Alkaline Solutions, J. Electrochem. Soc., 159, A720-A724, 2012.07.
56. H. Kitamura, L. Zhao, S.-H. Han, S. Okada, and J. Yamaki, Effect of Binder Materials on Cycling Performance of Fe2O3 Electrodes in Alkaline Solution Corresponding, J. Power Sources, 208, 391-396, 2012.07.
57. M. Zhou, L. Zhao, A. Kitajou, S. Okada, and J. Yamaki, Mechanism on Exothermic Heat of FeF3 Cathode in Li-ion Batteries, J. Power Sources, 203, 103-108, 2012.07.
58. A. Kitajou, H. Komatsu, K. Chihara, I. D. Gocheva, S. Okada, J. Yamaki, Novel Synthesis and Electrochemical Properties of Perovskite-type NaFeF3 for a Sodium-Ion Battery, J. Power Sources, 198, 389-392, 2012.07.
59. A. Ito, L. Zhao, S. Okada, and J. Yamaki, Synthesis of nano Fe3O4 loaded tubular carbon nanofibers and their application as negative electrodes for Fe/air batteries, J. Power Sources, 196, 8154-8159, 2012.07.
60. Lewei Zhao, S. -H. Han, Shigeto Okada, B. -Y. Na, K. Takeno, Jun-ichi Yamaki, Thermal Stability of Silicon Negative Electrode for Li-Ion Batteries, J. Power Sources, 203, 78-83, 2012.06.
61. Shigeto Okada, Grand Design of Advanced Next Generation Cathode Active Materials, Novel Cabon Resources Sciences NEWSLETTER, 6, 15-20, 2012.01.
62. Shigeto Okada, Research and Development of Post-Olivine Type Cathodes for High-Performance Li Batteries, Novel Cabon Resources Sciences NEWSLETTE, 6, 12-14, 2012.01.
63. Mingjiong Zhou, Lewei Zhao, Shigeto Okada, Jun-ichi Yamaki, Quantitative Studies on the Influence of LiPF6 on the Thermal Stability of Graphgite with Electrolyte, J. Electrochem. Soc., 159, A44-A48, 2012.01.
64. H. Yamamura, K. Nobuhara, S. Nakanichi, H. Iba, Shigeto Okada, Instigation of the Irreversible Reaction Mechanism and the Reactive Trigger on SiO Anode Material for Lithium-Ion Battery, Journal of the Ceramic Society of Japan, 119, 8154-8159, 2011.12.
65. S.-I. Park, I. Gocheva, S. Okada, and J. Yamaki, Electrochemical Properties of NaTi2(PO4)3 Anode for Rechargeable Aqueous Sodium-Ion Batteries, J. Electrochem. Soc., 2011.09.
66. K. Sato, L. Zhao, S. Okada, and J. Yamaki, LiPF6/Methyl Difluoroacetate Electrolyte with Vinylene Carbonate Additive for Li-ion Batteries, J. Power Sources, 2011.08.
67. S.-I. Park, S. Okada, and J. Yamaki, Symmetric Cell with LiMn2O4 for Aqueous Lithium-ion Battery, J. of Novel Carbon Resource Sciences, 3, 27-31, 2011.03.
68. Shigeto Okada, Sun Il Park, Eiji Kobayashi, Jun-ichi Yamaki, Solid State and Aqueous Li-Ion Batteries with Polyanionic Electrode Active Materials, Advances in Science and Technology, 72, 309-314, 2011.03.
69. L.S. Plashnitsa, E. Kobayashi, S. Okada, and J. Yamaki, Symmetric lithium-ion cell based on lithium vanadium fluorophosphate with ionic liquid electrolyte, Electrochimica Acta, 56, 1344-1351, 2011.02.
70. Motoshi Isono, Shigeto Okada, and Jun-ichi Yamaki, Synthesis and Electrochemical Characterization of Amorphous Li-Fe-P-B-O Cathode Materials for Lithium Batteries, J. Power Sources, 195, 593-598, 2010.03.
71. M. Zhou, L. Zhao, T. Doi, S. Okada, and J. Yamaki, Thermal Stability of FeF3 Cathode for Li-ion Batteries, J. Power Sources, 195, 4952-4956, 2010.03.
72. 岡田重人, 土井貴之, 山木準一, 次世代鉄系正極材料の現状と課題, セラミックス協会誌, 45, 3, 153-157, 2010.03.
73. 岡田重人, 正極材料, 化学, 65, 5, 36-40, 2010.03.
74. L.S. Plashnitsa, E. Kobayashi, Y. Noguchi, S. Okada, and J. Yamaki, Performance of NASICON Symmetric Cell with Ionic Liquid Electrolyte, J. of the Electrochem. Soc., 157, 4, 2010.03.
75. E. Kobayashi, L.S. Plashnitsa, T. Doi, S. Okada, and J. Yamaki, Electrochemical Properties of Li Symmetric Solid State Cell with NASICON-type Solid Electrolyte and Electrodes, Electrochem. Commun., 12, 894-896, 2010.03.
76. Shigeto Okada , Ceramic Materials in Energy Systems for Sustainable Development, World Academy of Ceramics, 173-192, 2009.12.
77. T. Doi, M. Zhou, L. Zhao, S. Okada, and J. Yamaki, Influence of Irreversible Reactions at Non-graphitizable Carbon Electrodes on Their Stability in Li-ion Batteries, Electrochem. Commun., 11, 1405-1408, 2009.12.
78. T. Doi, M. Zhou, L. Zhao, S. Okada, and J. Yamaki, Influence of Irreversible Reactions at Non-graphitizable Carbon Electrodes on Their Stability in Li-ion Batteries, Electrochem. Commun., 11, 1405-1408, 2009.09.
79. 岡田重人, 原聡, 土井貴之, 山木準一, 遷移金属硫化物正極のナトリウムイオン二次電池特性, 硫酸と工業, 62, 9, 131-137, 2009.09.
80. Takaaki Tanaka, Takayuki Doi, Shigeto Okada, Jun-ichi Yamaki, Effects of Salts in Methyl Difluoroacetate-based Electrolytes on their Thermal Stability in Lithium-ion Batteries, Fuel Cells, 9, 3, 269-272, 2009.06.
81. M.Nishijima, I.D.Gocheva, T.Doi, S.Okada, J.Yamaki, and T.Nishida, Cathode Properties of Metal Trifluorides in Li and Na Secondary Batteries, J. Power Sources, Vol.190, Issue 2, 558-562, 2009.05.
82. T. Doi, L.Zhao, S. Okada, and J. Yamaki, Thermal stability of the interface between discharged non-graphitizable carbon and electrolyte for lithium-ion batteries, Carbon, Volume: 47 Issue: 3 Pages: 894-900, 2009.03.
83. I.D.Gocheva, M.Nishijima, T.Doi, S.Okada, J.Yamaki, and T.Nishida, Mechanochemical synthesis of NaMF3 (M = Fe, Mn, Ni) and their electrochemical properties as positive electrode materials for sodium batteries, J. Power Sources, 187(1), 247-252, 2009.02.
84. T. Doi, L.Zhao, M.Zhou, S. Okada, and J. Yamaki, Quantitative studies on the thermal stability of the interface between graphite electrode and electrolyte, J. Power Sources, 185(2), 1380-1385, 2008.12.
85. X.Liu, T.Saito, T.Doi, S.Okada, and J.Yamaki, Electrochemical Properties of Rechargeable Aqueous Lithium Ion Batteries with an Olivine-type Cathode and a Nasicon-type Anode, J. Power Sources, 2008.12.
86. T.Doi, J.Kageura, S.Okada, and J.Yamaki, Low-temperature Surface Treatment of LiNi1/2Mn3/2O4 Thin-films by PMMA/zirconium Alkoxide Composites and Their Effects on Electrochemical Properties, J. Power Sources, 2008.12.
87. T.Doi, T.Yahiro, S.Okada, and J.Yamaki, Electrochemical Insertion and Extraction of Lithium-ion at Nano-sized LiMn2O4 Particles Prepared by a Spray Pyrolysis, Electrochim. Acta, 2008.11.
88. T. Nishida, Y. Yoshida, Y. Takahashi, S. Okada, J. Yamaki, Mossbauer study of LiFeVPOx as a new cathode material for lithium-ion battery, J. RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 275, 417-422, 2008.04.
89. H. Kurimoto, T. Nishida, S. Okada and J. Yamaki, 57Fe Mössbauer and DTA Study of R2O·2FeO·V2O5·P2O5 Glasses [R=Li, Na], J. of the Ceramic Soc. of Japan, 116, 637-640, 2008.04.
90. B. T. Hang, S. Okada, J. Yamaki, Fe2O3-filled carbon nanotubes as a negative electrode for an Fe-air battery, J. Power Sources, 178(1), 393-401, 2008.03.
91. B. T. Hang, S. Okada, J. Yamaki, Effect of binder content on the cycle performance of nano-sized Fe2O3-loaded carbon for use as a lithium battery negative electrode, J. Power Sources, 178(1), 402-408, 2008.03.
92. T. Doi, H. Fukudome, S. Okada and J. Yamaki, Computer simulation of a porous positive electrode for lithium batteries, J. of Power Sources, 174(2), 779-783, 2007.12.
93. T. Shiratsuchi, S. Okada, J. Yamaki, S. Yamashita, T. Nishida, Cathode performance of olivine-type LiFePO4 synthesized by chemical lithiation, J. Power Sources, 173, 979-984, 2007.12.
94. B. Hang, T. Doi, S. Okada, J. Yamaki, Effect of carbonaceous materials on electrochemical properties of nano-sized Fe2O3-loaded carbon as a lithium battery negative electrode, Journal of Power Sources, 174, 493-500, 2007.07.
95. B.T.Hang, S.Yoon, S.Okada, J.Yamaki, Effect of metal-sulfide additives on electrochemical properties of nano-sized Fe2O3-loaded carbon for Fe/air battery anodes, J. Power Sources, 168, 522-532, 2007.05.
96. M. Egashira, M. Tanaka-Nakagawa, I. Watanabe, S. Okada, J. Yamaki, Charge-discharge and High Temperature Reaction of LiCoO2 in Ionic Liquid Electrolytes Based on Cyano-substituted Quaternary Ammonium Cation, J. Power Sources, 160(2), 1387-1390, 2006.10.
97. L. Zhao, I. Watanabe, T. Doi, S. Okada, J. Yamaki, TG-MS analysis of solid electrolyte interphase (SEI) on graphite negative-electrode in lithium-ion batteries, J. Power Sources, 161(2), 1275-1280, 2006.10.
98. T. Shiratsuchi, S. Okada and J. Yamaki, FePO4 Cathode Properties for Li and Na Secondary Cells, J. Power Sources, 159(1), 268-271, 2006.09.
99. T. Kawamura, S. Okada, J. Yamaki, Decomposition reaction of LiPF6-based electrolytes for lithium ion cells, J. Power Sources, 156(2), 547-554, 2006.06.
100. B. T. Hang, T. Watanabe, M. Egashira, I. Watanabe, S. Okada and J. Yamaki, The Effect of Additives on The Electrochemical Properties of Fe/C Composite for Fe/Air Battery Anode, J. Power Sources, 155, 461-469, 2006.04.
101. J. Yamaki, M. Makidera, T. Kawamura, M. Egashira and S. Okada, Voltage prediction of nano-sized LiNiO2 cathode for use in Li-ion cells, J. Power Sources, 153(2), 245-250, 2006.01.
102. B. Hang, I. Watanabe, T. Doi, S. Okada, J. Yamaki, Electrochemical properties of nano-sized Fe2O3-loaded carbon as a lithium battery anode, J. Power Sources, 161(2), 1281-1287, 2006.01.
103. B. T. Hang, M. Egashira, I. Watanabe, S. Hata, S. Okada, J. Yamaki and S. Yoon, Electrochemical Properties of Fe2O3-nano-loaded Carbon and Fe2O3-nano/carbon Mixed Composites for Iron-air Battery Anodes, Engineering Science Reports, Kyushu University, 2005.12.
104. B. T. Hang, M. Egashira, I. Watanabe, S. Okada, J. Yamaki, S. Yoon and I. Mochida, The Effect of Carbon Species on the Properties of Fe/C Composite for Metal-air Battery Anode, J. Power Sources, 10.1016/j.jpwsour.2004.11.044, 143, 1-2, 256-264, 143, 256-264, 2005.12.
105. M. Egashira, S. Okada, J. Yamaki, N. Yoshimoto and M. Morita, Effect of Small Cation Addition on the Conductivity of Quaternary Ammonium-based Ionic Liquids, Electrochimica Acta, 10.1016/j.electacta.2005.01.016, 50, 18, 3708-3712, 50, 3708-3712, 2005.12.
106. B. T. Hang, I. Watanabe, M. Egashira, S. Okada, J. Yamaki, S. Hata, S.-H. Yoon and I. Mochida, The Electrochemical Properties of Fe2O3-loaded Carbon Electrodes for Iron-air Battery Anodes, J. Power Sources, 10.1016/j.jpowsour.2005.02.028, 150, 261-271, 150, 261-27, 2005.12.
107. S. Okada, T. Yamamoto, Y. Okazaki, J. Yamaki, M. Tokunaga and T. Nishida, Cathode Properties of Amorphous and Crystalline FePO4, J. Power Sources, 10.1016/j.jpowsour.2005.03.200, 146, 1-2, 570-574, 146, 570-574, 2005.12.
108. S. Okada, M. Ueno, Y. Uebou and J. Yamaki, Fluoride Phosphate Li2CoPO4F as a High-voltage Cathode in Li-ion Batteries, J. Power Sources, 10.1016/j.jpowsour.2005.03.149, 146, 1-2, 565-569, 146, 565-569, 2005.12.
109. M. Egashira, M. Nakawaga, I. Watanabe, S. Okada and J. Yamaki, Cyano-containing Quaternary Ammonium-based Ionic Liquid as a ‘Co-solvent’ for Lithium Battery Electrolyte, J. Power Sources, 10.1016/j.jpowsour.2005.03.069, 146, 1-2, 685-688, 146(1-2), 685-688, 2005.12.
110. T. Kawamura, M. Makidera, S. Okada, K. Koga, N. Miura and J. Yamaki, Effect of Nano-Size LiCoO2 Cathode Powders on Li-Ion Cells, J. Power Sources, 10.1016/j.jpowsour.2005.03.012, 146, 1-2, 27-32, 146, 27-32, 2005.12.
111. B.T. Hang, I. Watanabe, M. Egashira, S. Okada, J. Yamaki, S.-H. Yoon and I. Mochida, Comparative Study of Fe2O3-nano-loaded Carbon and Fe2O3-nano/carbon Mixed Composites for Iron-air Battery Anodes, Electrochem. and Solid State Letters, 10.1149/1.1999914, 8, 9, A476-A480, 8, No.9, A476-A480, 2005.12.
112. T. Kawamura, T. Tanaka, M. Egashira, I. Watanabe, S. Okada, and J. Yamaki, Methyl Difluoroacetate Inhibits Corrosion of Aluminum Cathode Current Collector for Lithium Ion Cells, Electrochem. and Solid State Letters, 10.1149/1.1993367, 8, 9, A459-A463, 8, No.9, A459-A463, 2005.09.
113. B. T. Hang, M. Egashira, I. Watanabe, S. Hata, S. Okada, J. Yamaki, S-H. Yoon, Electrochemical properties of Fe2O3-Nano-Loaded Carbon and Fe2O3-Nano/Carbon Mixed Composites for Iron-Air Battery Anodes, 九州大学大学院総合理工学報告, 27(1), 1-8, 2005.07.
114. M. Egashira, S. Okada, Y. Korai, J. Yamaki and I. Mochida, Toluene-insoluble fraction of fullerene-soot as the electrode of a double-layer capacitor, J. Power Sources, 10.1016/j.jpowsour.2005.02.003, 148, 116-120, 148, 116-120, 2005.01.
115. 西田哲明, 徳永将大 ,山元貴文, 岡田重人, 山木準一, リチウムイオン電池正極材料のメスバウアスペクトル, 京都大学原子炉研究所KURテクニカルレポート, 2004.12.
116. K. Takeno, M. Ichimura, J. Yamaki and S. Okada, Quick Testing of Batteries in Lithium-ion Battery Packs with Impedance-measuring Technology, J. Power Sources, 10.1016/j.jpowsour.2003.09.045, 128, 1, 67-75, 128, 67-75, 2004.01.
117. Y. Chen, S. Okada and J. Yamaki,, Preparation and Characterization of LiFePO4/Ag Composite for Li-ion Batteries, Composite Interface, 10.1163/1568554041526567, 11, 3, 277-283, 11, No.3, 277-283, 2004.01.
118. E.-S. Hong, S. Okada, T. Sonoda, S. Gopukumar and J. Yamaki, Thermal Stability of Electrolytes with Mixtures of LiPF6 and LiBF4 Used in Lithium-Ion Cells, J. Electrochem. Soc., 10.1149/1.1802136, 151, 11, A1836-A1840, 151, No.11, A1836-A1840, 2004.01.
119. M. Egashira, S. Okada, J. Yamaki, D. A. Dri, F. Bonadies and B. Scrosati, The Preparation of Quaternary Ammonium-based Ionic Liquid Containing a Cyano Group and Its Properties in a Lithium Battery Electrolyte, J. Power Sources, 10.1016/j.jpowsour.2004.06.022, 138, 1-2, 240-244, 138, 240-244, 2004.01.
120. J. Yamaki, T. Tanaka, M. Ihara, K. Sato, M. Egashira I. Watanabe and S. Okada, Thermal Stability of Methyl Difluoroacetate as a Novel Electrolyte Solvent for Lithium Batteries Electrolytes, Electrochemistry, 71, 12, 1154-1156, 71(12) : 1154-1156, 2003.12.
121. T. Kawamura, T. Sonoda, S. Okada and J. Yamaki, Improvement of the Stability of LiPF6 Electrolytes toward Water by the Addition of LiCl, Electrochemistry, 71, 12, 1139-1141, 71(12) : 1139-1141, 2003.12.
122. S. Okada, S. Sawa, Y. Uebo, M. Egashira, J. Yamaki, M. Tabuchi, H. Kobayashi, H. Fukumi and H. Kageyama, Charge-discharge Mechanism of LiCoPO4 Cathode for Rechargeable Lithium Batteries, Electrochemistry, 71, 12, 1136-1138, 71(12) : 1136-1138, 2003.12.
123. M. Egashira, T. Kiyabu, I. Watanabe, S. Okada and J. Yamaki, The Effect of Additives in Room Temperature Molten Salt-based Lithium Battery Electrolytes, The 5th Korea-Japan Joint Seminar on Advanced Batteries, 2003.12.
124. IIhara M, Hang BT, Sato K, Egashira M, Okada S, Yamaki J, Properties of carbon anodes and thermal stability in LiPF6/methyl difluoroacetate electrolyte, J. Electrochem. Soc., 10.1149/1.1614269, 150, 11, A1476-A1483, 150 (11): A1476-A1483, 2003.11.
125. Egashira M, Okada S, Yamaki J, On the cycle behavior of various graphitic negative electrodes in a propylene carbonate-based electrolyte for lithium ion batteries, J. Power Sources, 10.1016/S0378-7753(03)00601-3, 124, 1, 237-240, 124 (1): 237-240, 2003.10.
126. J. Yamaki, M. Ihara, M. Egashira and S. Okada, Improvement of Thermal Stability of Lithium Ion Batteries by Using Methyl Difluoroacetate as an Electrolyte Solvent, INTELEC’03, 59-65, 2003.10.
127. S. Okada, M. Ueno, Y. Uebo and J. Yamaki, Structure and Cathode Properties of LiCoPO4 and Li2CoPO4F for High-voltage Li-ion Batteries, INTELEC’03, 66-71, 19-23, 2003.10.
128. J. Yamaki, T. Tanaka, M. Ihara, K. Sato and S. Okada, Thermal Stability of Methyl difluoroacetate as a Novel Electrolyte Solvent for Lithium Batteries, Lithium Battery Discussion 2003, 14-19, 2003.09.
129. Shigeto Okada, Toshiyuki Tonuma, Yasushi Uebo and Jun-ichi Yamaki, Anode properties of calcite-type MBO3 (M:V, Fe), J. Power Sources, 10.1016/S0378-7753(03)00308-2, 119, 621-625, Vol. 119-121, 621-625, 2003.07.
130. Nick Iltchev, Yike Chen, Shigeto Okada and Jun-ichi Yamaki, LiFePO4 storage at room and elevated temperatures, J. Power Sources, 10.1016/S0378-7753(03)00215-5, 119, 749-754, Vol. 119-121, 749-754, 2003.07.
131. Jun-ichi Yamaki, Yasunori Baba, Noriko Katayama, Hideyasu Takatsuji, Minato Egashira and Shigeto Okada, Thermal stability of electrolytes with LixCoO2 cathode or lithiated carbon anode, J. Power Sources, 10.1016/S0378-7753(03)00254-4, 119, 789-793, Vol. 119-121, 789-793, 2003.07.
132. Y. Uebou, S. Okada and J. Yamaki, Electrochemical Alkali Metal Intercalation into the 3D framework of MP2O7 (M = Mo, W), Electrochemistry, 71, 5, 308-312, 71(5): 308-312, 2003.05.
133. M. Egashira, S. Okada, J. Yamaki, D. A. Dri, F. Bonadies and B. Scrosati, Functionalized Tetraalkylammonium Ionic Liquid Electrolytes for Use in Lithium Batteries, Extended Abstract of ECS Spring Meeting, 2003.05.
134. Y.Uebou, S. Okada, J. Yamaki, Electrochemical Insertion of Lithium and Sodium into (MoO2)2P2O7, J. Power Sources, 10.1016/S0378-7753(02)00648-1, 115, 1, 119-124, Vol. 115, 119-124, 2003.04.
135. Chen, Yike; Shigeto, Okada; Yamaki, Jun-ichi, Preparation of ferric phosphate and its application in lithium battery, Huaqiao Daxue Xuebao, Ziran Kexueban, 23(4), 407-411., 2002.12.
136. S. Okada, Y. Uebo and J. Yamaki, Structure and Battery Properties of Calcite-type MBO3 (M = V, Fe), Activity Report on Neutron Scattering Research, 9: 88-89, 2002.09.
137. S. Okada, M. Ueno, Y. Uebo and J. Yamaki, Structure and Battery Properties of LiCoPO4 and Li2CoPO4F, Activity Report on Neutron Scattering Research, 9: 86-87, 2002.09.
138. Y.Uebou, T.Kiyabu, S. Okada, J. Yamaki, Electrochemical Sodium Insertion into the 3D-framework of Na3M2(PO4)3(M=Fe, V), The Reports of Institute of Advanced Material Study, Vol.16, pp.1-5, 2002.08.
139. Minato Egashira, Shigeto Okada, and Jun-ichi Yamaki, The Effect of the Coexistence of Anion Species in Imidazolium Cation-Based Molted Salt Systems, Solid State Ionics, 10.1016/S0167-2738(02)00087-5, 148, 3-4, 457-461, 148, 457-461, 2002.06.
140. Yasunori Baba, Shigeto Okada, and Jun-ichi Yamaki, Thermal Stability of LiCoO2 Cathode for Lithium Batteries, Solid State Ionics, 10.1016/S0167-2738(02)00067-X, 148, 3-4, 311-316, 148, 311-316, 2002.06.
141. Kazuya Sato, Ikiko Yamazaki, Shigeto Okada, and Jun-ichi Yamaki, Mixed solvent Electrolytes Containing Fluorinated Carboxylic Acid Esters to Improve the Thermal Stability of Lithium Metal Anode Cells, Solid State Ionics, 10.1016/S0167-2738(02)00088-7, 148, 3-4, 463-466, 148, 463-466, 2002.06.
142. Yasushi Uebou, Shigeto Okada, Minato Egashira, and Jun-ichi Yamaki, Cathode Properties of Pyrophosphates for Rechargeable Lithium Batteries, Solid State Ionics, 10.1016/S0167-2738(02)00069-3, 148, 3-4, 323-328, 148, 323-328, 2002.06.
143. Minato Egashira, Hideyasu Takatsuji, Shigeto Okada, and Jun-ichi Yamaki, Properties of containing Sn nanoparticles activated carbon fiber for a nagative electrole in lithium batteries, J. Power Sources, 10.1016/S0378-7753(01)00980-6, 107, 1, 56-60, 107, 56-60, 2002.04.
144. J. Yamaki, M. Egashira, and S. Okada, Phase Separation of Intercalation Electrode, Ionics, 10.1007/BF02377753, 8, 1-2, 53-61, 8, 53-61, 2002.03.
145. Tetsuya Kawamura, Arihisa Kimura, Minato Egashira, Shigeto Okada, and Jun-ichi Yamaki, Thermal Stability of Alkyl Carbonate Mixed-Solvent Electrolytes for Lithium Ion Cells, J. Power Sources, 10.1016/S0378-7753(01)00960-0, 104, 2, 260-264, 104, 260 - 264, 2002.02.
146. Yamaki J, Yamazaki I, Egashira M, Okada S, Thermal studies of fluorinated ester as a novel candidate for electrolyte solvent of lithium metal anode rechargeable cells, J. Power Sources, 10.1016/S0378-7753(01)00805-9, 102, 1-2, 288-293, 102, 288 - 293, 2001.11.
147. Okada, S.; Sawa, S.; Egashira, M.; Yamaki, J., Cathode properties of phospho-olivine LiMPO4 for lithium secondary batteries, J. Power Sources, 10.1016/S0378-7753(01)00631-0, 97-8, 430-432, 97-98 430-432, 2001.11.
148. Yamaki J, Egashira M, Okada S, Voltage prediction from Coulomb potential created by atoms of spinel LiMn2O4 cathode active material for Li ion cells, J. Power Sources, 10.1016/S0378-7753(01)00629-2, 97-8, 349-353, 97-98, 349-353, 2001.07.
149. Egashira M, Okada S, Yamaki J, The Effect of Cation Species on the Anodic Oxidation of Organic Solvent Electrolytes, Electrochemistry, 69, 6, 455-457, 69, 455-457, 2001.06.
150. J. Yamaki, I. Yamazaki, M. Egashira, S. Okada, Thermal Stability of Fluorinated Organic Electrolytes for Li Cells, Proceedings of the 4th Japan-Korea Joint seminar on Advanced Batteries, pp. 38-45, 2001.06.
151. Uebou, Yasushi; Okada, Shigeto; Egashira, Synthesis, structures, and electrochemical characteristics of pyrophosphates, The Reports of Institute of Advanced Material Study, 15(1), 57-61., 2001.01.
152. Egashira M, Takahashi H, Okada S, Yamaki J, Measurement of the electrochemical oxidation of organic electrolytes used in lithium batteries by microelectrode, J. Power Sources, 10.1016/S0378-7753(00)00553-X, 92, 1-2, 267-271, 92, 267-271, 2001.01.
153. J. Yamaki, M. Egashira, S. Okada, The Possibility of Voltage Prediction from Coulomb Potential Created by the Atoms of a Cathode Active material for Li Ion cells, J. Power Sources, 10.1016/S0378-7753(00)00457-2, 90, 1, 116-125, 90, 116-125, 2000.08.
154. S. Okada, S. Sawa, M. Egashira, J. Yamak, Cathode Properties of Phospho-olivine LiMPO4 for Lithium Secondary Batteries, Proceedings of 10th International Meeting on Lithium Batteries, 10.1016/S0378-7753(01)00631-0, 97-8, 430-432, 2000.06.
155. J. Yamaki, M. Egashira, S. Okada, Voltage Prediction from coulomb Potential Created by Atoms of a Cathode Active material for Li Ion cells, Proceedings of 10th International Meeting on Lithium Batteries, 2000.06.
156. J. Yamaki, M. Egashira, S. Okada, Thermal Stability of Electrolytes Used in lithium Ion Cells, Proceedings of The Third France-Japan Meeting on Lithium Batteries, 2000.05.
157. J. Yamaki, M. Egashira, S. Okada, Voltage Prediction from coulomb Potential Created by Atoms of a Cathode Active material for Li Ion cells, ITE Battery Letters, 1, 53-58, 2000.04.
158. J. Yamaki, M. Egashira, S. Okada, Potential and Thermodynamics of Graphite Anode, J. Electrochem. Soc., 10.1149/1.1393218, 147, 2, 460-465, 147, 460-465, 2000.01.
159. J. Yamaki, M. Egashira, S. Okada, Potential and Thermodynamics of Graphite Anode, Proc. 3rd Korea-Japan Joint Seminar on Advanced Batteries, Kyongju, Korea, 1999.06.
160. J. Yamaki, S. Okada, Safety of Lithium Ion Cells, ITE Battery Letters, 1, 180, 1999.01.
161. S.Okada, T.Takada, M.Egashira J.Yamaki, Characteristics of NASICON-type Cathodes for Lithium Batteries, Recent Res.Devel.Electro Anal.Chem., 1, 1, 1999.01.
162. K. Asakura, S. Okada, H. Arai, S. Tobishima and Y. Sakurai, Cathode Properties of Layered Structure Li2PtO3, J. Power Sources, 10.1016/S0378-7753(99)00113-5, 81, 388-392, 81-82: 388-392, 1999.01.
163. H. Arai, S. Okada, Y. Sakurai, and J. Yamaki, Electrochemical and structual study of Li2CuO2, LiCuO2 and NaCuO2, Solid State Ionics, 106, 45, 1998.02.
164. J. Yamaki, M. Egashira, S. Okada, Potential and Thermodynamics of Graphite Anode, Proceedings of the Second Japan-France Joint Seminar on Lithium Batteries, pp. 41-50, 1998.01.
165. Arai H, Okada S, Sakurai Y, Yamaki J, Thermal behavior of Li1-yNiO2 and the decomposition mechanism, Solid State Ionics, 109, 295, 1998.01.