| Project/Area Number |
24550206
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Functional materials/Devices
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| Research Institution | Tohoku University |
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Principal Investigator |
KUWATA Naoaki 東北大学, 多元物質科学研究所, 助教 (00396459)
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| Co-Investigator(Renkei-kenkyūsha) |
KAWAMURA Junichi 東北大学, 多元物質科学研究所, 教授 (50142683)
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| Research Collaborator |
KOBAYASHI Tetsuro 株式会社 豊田中央研究所, 環境・エネルギー2 部 固体イオニクス研究室, 室長
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | 混合伝導体 / リチウムイオン電池 / イオン伝導度 / 拡散係数 / 全固体電池 / 電子ブロッキング電極 / ノンストイキオメトリ / パルスレーザー堆積法 / 交流インピーダンス / 固体電解質 / 正極材料 / 不定比性 / インピーダンススペクトル / 固体イオニクス / 全固体リチウム電池 / コバルト酸リチウム / 薄膜電池 |
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| Outline of Final Research Achievements |
We have developed electron-blocking electrodes using thin-film battery techniques to investigate ionic conductivity of thin-film cathode materials. The ionic conductivity of the cathode materials are essential factor which limits the performance of solid-state batteries. The electron-blocking electrodes were prepared from solid electrolytes and lithium thin films. The ionic and electronic conductivity of a thin-film lithium cobalt oxide were investigated. In addition, lithium deficient Li1-xCoO2 was prepared by chemical lithium extraction and the ionic and electronic conductivity was investigated by the same techniques.
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