Enhanced structural stability of o-LiMnO2 by sol-gel coating of Al2O3

被引：77

作者：

Cho, J ^{[1
]}

Kim, YJ

Kim, TJ

Park, B

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[2] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul, South Korea

来源：

CHEMISTRY OF MATERIALS | 2001年 / 13卷 / 01期

关键词：

D O I：

10.1021/cm000759+

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Sol-gel coating of Al2O3 and subsequent heat-treatment at 400 degreesC greatly improved structural instability of orthohombic LiMnO2 during electrochemical cycling at 55 degreesC. The coated electrode showed only 2% capacity loss after 50 cycles, which was superior to that of the bare one (35% loss) in its capacity stability. This was attributed to the formation of a protective coating layer, consisting of LiMn1-xAlxO2, only at the particle surface.

引用

页码：18 / +

页数：4

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