2015 Fiscal Year Final Research Report
Study on dynamic measurement of lithium behaviour in lithium ion secondary battery using elastic recoil detection technique
Project/Area Number |
25420762
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Structural/Functional materials
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Research Institution | Meijo University |
Principal Investigator |
TSUCHIYA BUN 名城大学, 理工学部, 准教授 (90302215)
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Co-Investigator(Kenkyū-buntansha) |
MORITA KENJI 名古屋産業科学研究所, 研究員 (10023144)
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Project Period (FY) |
2013-04-01 – 2016-03-31
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Keywords | リチウムコバルト酸化物 / 全固体リチウムイオン二次電池 / リチウムイオン伝導 / 反跳粒子検出法 / その場測定 / 水素吸収 |
Outline of Final Research Achievements |
The migrations of lithium (Li) as well as hydrogen (H) in multi-layers thin films of Au/LiCoO2 (thickness: approximately 25 nm/35 nm), deposited onto one face of Li1.4Ti2Si0.4P2.6O12-AlPO4 (LATP) substrates using a pulsed laser deposition, were dynamically observed with electric charging in vacuum by combining elastic recoil detection (ERD) analysis with Rutherford backscattering spectrometry (RBS) with 9.0-MeV O4+ ion-probe beams. The ERD spectra clearly revealed that Li concentration, x, in LixCoO2 changed to 1.00~0.63 by charge densities of approximately 0~8.40 mC/cm2, which the acquired voltage was 0~6.23 V. The results show the migration of Li atoms from the LiCoO2 thin film to the LATP has been observed using the present ion bean analysis. In addition, the H concentrations on Au and in the LiCoO2 thin film also increased due to the electric charging and O4+ ion irradiation. The presence of H significantly influences the Li+ ion conduction for the Li+ ion secondary battery.
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Free Research Field |
リチウムイオン二次電池材料
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