LITHIUM EXTRACTION FROM ORTHORHOMBIC LITHIUM MANGANESE OXIDE AND THE PHASE-TRANSFORMATION TO SPINEL

被引：173
作者：
GUMMOW, RJ
LILES, DC
THACKERAY, MM
机构：
[1] Division of Materials Science and Technology, CSIR, Pretoria, 0001
来源：
MATERIALS RESEARCH BULLETIN | 1993年 / 28卷 / 12期
关键词：
LITHIUM; MANGANESE; OXIDES; SPINELS;
D O I：
10.1016/0025-5408(93)90172-A
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Orthorhombic LiMnO2 products, synthesised by the reaction of gamma-MnO2 and LiOH in argon at 600-620 degrees C using carbon as a reducing agent, have been evaluated as electrode materials in lithium cells. Products that contained a minor proportion of a lithiated spinel phase showed greater electrochemical activity than pure LiMnO2. On delithiation, LiMnO2 transforms irreversibly to a spinel-type structure. A mechanism for the orthorhombic LixMnO2-spinel phase transformation is proposed.
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页码：1249 / 1256
页数：8
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