| 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 |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | Meijo University |
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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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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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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 / 二次電池 / イオン伝導 / 二層薄膜 / プラチナ触媒 |
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| 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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