Improvement of high-rate performance of all-solid-state lithium secondary batteries using LiCoO2 coated with Li2O-SiO2 glasses
Improvement of high-rate performance of all-solid-state lithium secondary batteries using LiCoO2 coated with Li2O-SiO2 glasses
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DOI：
10.1149/1.2795837
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发表时间：
2008-01-01
影响因子：
--
通讯作者：
Tatsumisago, Masahiro
中科院分区：
文献类型：
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作者：
Sakuda, Atsushi;Kitaura, Hirokazu;Tatsumisago, Masahiro
倍率性能的发展是全固态锂二次电池需要解决的最重要问题之一。通过用Li2O-SiO2薄膜涂覆LiCoO2颗粒，这些电池的电化学性能得到了极大的提高。这些涂层降低了 LiCoO2 和玻璃陶瓷电解质之间的界面电阻。使用涂层LiCoO2颗粒的电池的倍率性能优于使用未涂层LiCoO2的电池。 Li2SiO3涂层在提高倍率性能方面比SiO2涂层更有效，这表明涂层材料的锂离子电导率对于高倍率性能很重要。 (C) 2007 年电化学协会。
Development of rate capability is one of the most important issues to be solved in all-solid-state lithium secondary batteries. The electrochemical performance of these batteries has been highly improved by coating LiCoO2 particles with Li2O-SiO2 thin film. The interfacial resistance between LiCoO2 and the glass-ceramic electrolyte was decreased by those coatings. The rate capabilities of the cells using the coated LiCoO2 particles were superior to that of the cell using noncoated LiCoO2. The Li2SiO3 coating was more effective than the SiO2 coating in enhancing rate performance, suggesting that lithium-ion conductivity of the coating materials is important for high-rate performance. (C) 2007 The Electrochemical Society.