SPINEL VERSUS LAYERED STRUCTURES FOR LITHIUM COBALT OXIDE SYNTHESIZED AT 400-DEGREES-C

被引：176
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 / 03期
关键词：
LITHIUM; COBALT; OXIDE; SPINEL; LAYERED STRUCTURE;
D O I：
10.1016/0025-5408(93)90157-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Rietveld refinements of X-ray data of LiCoO2 prepared at 400-degrees-C and a chemically-delithiated product Li0.5CoO2 using space group symmetries R3mBAR and Fd3m are reported. Refinements in both R3mBAR (layered-type structure) and Fd3m (spinel-type structure) give comparable fits to the data. This structural anomaly is discussed in terms of the refinements and electrochemical data obtained when lithium is extracted from LiCoO2 in non-aqueous cells at room temperature. A spinel-related model for LixCoO2 (0.5 less-than-or-equal-to x less-than-or-equal-to 1) is preferred.
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页码：235 / 246
页数：12
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