Effect of Al3+ and F- doping on the irreversible oxygen loss from layered Li[Li0.17Mn0.58Ni0.25]O2 cathodes

被引：40

作者：

Wu, Y. ^{[1
]}

Manthiram, A. ^{[1
]}

机构：

[1] Univ Texas, Mat Sci & Engn Program, Austin, TX 78712 USA

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2007年 / 10卷 / 06期

关键词：

D O I：

10.1149/1.2720637

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The effect of the substitution of a small amount of Al3+ or F- on the well- known irreversible loss of oxygen during the first charge from the layered Li[Li0.17Mn0.58Ni0.25]O-2, which is a solid solution between Li[Li1/3Mn2/3]O-2 and Li[Mn0.5Ni0.5]O-2, has been investigated. The oxygen loss from both Li[Li0.17-xAlxMn0.58Ni0.25]O-2 (0 <= x <= 0.1) and Li[Li0.17Mn0.58Ni0.25]O2-yFy (0 <= y <= 0.1) decreases sensitively with increasing Al or F content, which results in a drastic decrease in the reversible capacity in the subsequent cycles from similar to 250 to 90 mAh/g for x = 0.1 and 120 mAh/g for y = 0.1. (c) 2007 The Electrochemical Society.

引用

页码：A151 / A154

页数：4

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