Silicon-based anodes prepared by gas-deposition method for next generation lithium-ion battery
| Project/Area Number |
24350094
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial 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 | Tottori University |
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Principal Investigator |
SAKAGUCHI Hiroki 鳥取大学, 工学(系)研究科(研究院), 教授 (00202086)
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| Co-Investigator(Kenkyū-buntansha) |
USUI Hiroyuki 鳥取大学, 大学院工学研究科, 准教授 (60423240)
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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 |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2014: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2013: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2012: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
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| Keywords | リチウム二次電池 / 負極 / ケイ素 / 合金 / シリサイド / ガスデポジション法 / 厚膜 / 二次電池 / リチウムイオン電池 / 負極材料 / ガスデポジション / リチウム電池 |
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| Outline of Final Research Achievements |
As an anode of Li-ion battery, Si has a problem of a poor cyclability due to its large volume changes during charge－discharge and a resulting stress. We prepared composite thick-film electrodes consisting of rare-earth metal silicides and elemental Si by a gas-deposition method, and investigated their anode performances. Among various rare-earth silicides/Si electrodes, Gd－Si/Si electrode exhibited the most excellent cycling performance. We revealed that the excellent performance was caused by four properties of Gd－Si: a moderate Li-storage ability, a high electronic conductivity, a high thermodynamic stability, and a more elastic property than other silicides. This elastic property probably relaxes the stress during charge－discharge.
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Report
(4 results)
Research Products
(56 results)
