2013 Fiscal Year Final Research Report
Relaxation Analysis of Electrode Material
| Project/Area Number |
24656581
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Energy engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
YAO Takeshi 京都大学, エネルギー科学研究科, 教授 (50115953)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAI Shigeomi 京都大学, 大学院エネルギー科学研究科, 准教授 (10260655)
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| Co-Investigator(Renkei-kenkyūsha) |
YABUTSUKA Takeshi 京都大学, 大学院エネルギー科学研究科, 助教 (20574015)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 緩和解析 / リチウムイオン二次電池 / リチウム / 電極材料 / リートベルト解析 / 拡散 / 結晶構造 / 平衡状態 |
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| Research Abstract |
We have found, first in the world, that we can make the transition process from kinetic state to equilibrium state of electrode material clear by analyzing it just after the Li insertion or extraction with time and we named this "Relaxation analysis". The Relaxation analysis is a revolutionary method to make the dynamic change of state clear for the electrode material and is important for research of electrode material. We have applied the Relaxation analysis to many kind of electrode material and it was revealed that every electrode material changes dynamically in its structures and/or phases according to the condition of Li transfer. The Relaxation analysis will develop as the powerful method for analyzing electrode materials.
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