IMPROVED CAPACITY RETENTION IN RECHARGEABLE 4V LITHIUM LITHIUM MANGANESE OXIDE (SPINEL) CELLS

被引:1404
作者
GUMMOW, RJ [1 ]
DEKOCK, A [1 ]
THACKERAY, MM [1 ]
机构
[1] CSIR, DIV MAT SCI & TECHNOL, PRETORIA 0001, SOUTH AFRICA
关键词
D O I
10.1016/0167-2738(94)90450-2
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
The rechargeable capacity of 4 V LixMn2O4 spinel cathodes (0 < x less-than-or-equal-to 1) has been improved by modifying the composition of the spinel electrode. Stable rechargeable capacities in excess of 100 mAh/g in flooded-electrolyte lithium cells can be achieved if LiMn2O4 is doped with mono- or multivalent cations (e.g. Li+, Mg2+, Zn2+) or, alternatively, with additional oxygen to increase the average manganese-ion oxidation state marginally above 3.5.
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页码:59 / 67
页数:9
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