2017 Fiscal Year Final Research Report
Ion diffusion in solids clarified with quantum beams and application to electrochemical devices
Project/Area Number |
26286084
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Quantum beam science
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Research Institution | Toyota Central R&D Lab., Inc. |
Principal Investigator |
Sugiyama Jun 株式会社豊田中央研究所, 分析部量子ビーム解析研究室, 主監 (40374087)
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Co-Investigator(Kenkyū-buntansha) |
幸田 章宏 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 研究機関講師 (10415044)
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Co-Investigator(Renkei-kenkyūsha) |
NOZAKI Hiroshi 株式会社豊田中央研究所, 分析部量子ビーム解析研究室, 主任研究員 (90394890)
HARADA Masashi 株式会社豊田中央研究所, スラリー特任研究室, 主任研究員 (60394839)
UMEGAKI Izumi 株式会社豊田中央研究所, フロンティア研究部門, 研究員 (20638522)
SATO Taku 東北大学, 多元物質科学研究所, 教授 (70354214)
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Project Period (FY) |
2014-04-01 – 2018-03-31
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Keywords | ミュオンスピン回転緩和 / 量子ビーム / イオン拡散 / 電池 |
Outline of Final Research Achievements |
Ion diffusion is solids is a basic principle behind an operation of batteries. However, it is extremely difficult to determine a reliable diffusion coefficient of Li and Na ions in electrode materials, particularly for cathode materials due to the presence of paramagnetic moments. We have therefore attempted to measure a diffusion coefficient in such materials with a muon spin rotation and relaxation (muSR) technique, because muSR can detect a slight deviation of internal magnetic fields in solids caused by Li (Na) diffusion. As a result, we have successfully obtained diffusion coefficients of Li and Na ions in electrode and electrolyte materials using powder, electrode sheet, and film samples.
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Free Research Field |
ミュオン固体物性
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