Manganese dissolution from lithium doped Li-Mn-O spinel cathode materials into electrolyte solution

被引：45

作者：

Komaba, S ^{[1
]}

Kumagai, N ^{[1
]}

Sasaki, T ^{[1
]}

Miki, Y ^{[1
]}

机构：

[1] Iwate Univ, Dept Chem Engn, Morioka, Iwate 0208551, Japan

来源：

ELECTROCHEMISTRY | 2001年 / 69卷 / 10期

关键词：

lithium-ion battery; LiMn2O4; Mn dissolution;

D O I：

10.5796/electrochemistry.69.784

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Manganese dissolution from spinel LiMn2O4 cathode material is one of the origins of a significant capacity fading with cycling for rechargeable lithium ion batteries. To suppress the manganese dissolution, the Li1+xMn2-xO4 (0 less than or equal to x less than or equal to 0.1) spinels were prepared. Their cycle performances and the amount of manganese dissolution from the spinels in charged state into an electrolyte were investigated to confirm that the manganese dissolution was suppressed in the lithium-doped spinels system. As a result, it was found that the rate of manganese dissolution decreased and the cyclability was improved with increasing doping amount of lithium in the spinel Compound due to stabilizing the spinel structure by subustituting lithium for manganese in 16d sites.

引用

页码：784 / 787

页数：4

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