STUDIES OF LITHIUM INTERCALATION INTO CARBONS USING NONAQUEOUS ELECTROCHEMICAL-CELLS

被引:1288
作者
FONG, R
VONSACKEN, U
DAHN, JR
机构
[1] Moli Energy Limited, Burnaby British Columbia
关键词
D O I
10.1149/1.2086855
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Li/graphite and Li/petroleum coke cells using a 1M LiAsF6 in a 50:50 mixture of propylene carbonate (PC) and ethylene carbonate (EC) electrolyte exhibit irreversible reactions only on the first discharge. These irreversible reactions are associated with electrolyte decomposition and cause the formation of a passivating film or solid electrolyte interphase on the surface of the carbon. The amount of electrolyte decomposition is proportional to the specific surface area of the carbon electrode. When all the available surface area is coated with the film of decomposition products, further decomposition reactions stop. In subsequent cycles, these cells exhibit excellent reversibility and can be cycled without capacity loss. © 1990, The Electrochemical Society, Inc. All rights reserved.
引用
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页码:2009 / 2013
页数:5
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