Enhancement of rate capability in graphite anode by surface modification with zirconia

被引：73

作者：

Kottegoda, IRM ^{[1
]}

Kadoma, Y ^{[1
]}

Ikuta, H ^{[1
]}

Uchimoto, Y ^{[1
]}

Wakihara, M ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Appl Chem, Grad Sch Sci & Engn, Meguro Ku, Tokyo 1528552, Japan

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2002年 / 5卷 / 12期

关键词：

D O I：

10.1149/1.1516410

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Zirconia coating the graphite was examined with a view to enhance the cycling stability of the graphite anode in Li-ion batteries. A thin zirconia film was produced on the graphite surface using an alkoxide precursor solution, followed by the conversion of the wet film into an oxide film by thermal annealing. The anode consisting of zirconia-treated graphite, acetylene black, and the binder (8:1:1) exhibits a capacity exceeding the theoretical value and a pronounced stability upon cycling even at a charge-discharge current rate as high as 3C. It is suggested that the combination of nanocrystalline-zirconia and the in situ formed surface films better protects graphite from destruction upon cycling. (C) 2002 The Electrochemical Society.

引用

页码：A275 / A278

页数：4

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