Lithium-Ion Conductivity in Lithium Lanthanum Titanates as Different Local Distortion Model Compounds
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概要
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The extended X-ray absorption fine structure (EXAFS) was measured to study the effects of the local structures on the Li-ion transfer in the La2/3−xLi3xTiO3 perovskite model compound with different lanthanum ion concentrations. The results indicate that the local structure is more distorted and the interatomic distances of Ti–La and Ti–O–Ti become shorter with the decrease of lanthanum ion concentration. The change in Li-ion conductivity with different lanthanum ion concentration is well explained by the relation between the estimation of activation energy with which Li ions hop through the bottleneck and the results of local distortion by EXAFS analysis.
著者
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Fukutsuka Tomokazu
Graduate School Of Engineering Himeji Institute Of Technology
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Kuwano Jun
Faculty of Engineering, Tokyo University of Science, 12-1 Funakawaramachi, Ichigaya, Shinjuku-ku, Tokyo 162-8601, Japan
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FUKUTSUKA Tomokazu
Graduate School of Human and Environmental Studies, Kyoto University
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SAITO Morihiro
Faculty of Engineering, Tokyo University of Science
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OKUMURA Toyoki
Graduate School of Human and Environmental Studies, Kyoto University
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UCHIMOTO Yoshiharu
Graduate School of Human and Environmental Studies, Kyoto University
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