FACTOR AFFECTING THE CAPACITY RETENTION OF LITHIUM-ION CELLS

被引:116
|
作者
OHZUKU, T
UEDA, A
YAMAMOTO, N
IWAKOSHI, Y
机构
[1] Electrochemistry and Inorganic Chemistry Laboratory, Department of Applied Chemistry, Faculty of Engineering, Osaka, 558, Sugimoto 3-3-138, Sumiyoshi
关键词
LITHIUM-ION CELLS; CAPACITY; RECHARGEABLE LITHIUM CELLS;
D O I
10.1016/0378-7753(94)02047-7
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
Capacity failure due to the imbalance of coulombic efficiencies between positive and negative electrodes in a lithium-ion (shuttlecock) cell was examined by fabricating two types of cells, i.e., Li[Li1/3Ti5/3]O-4/LiNiO2 and carbon/LiNiO2. Rechargeable capacity of a lithium-ion cell consisting of Li[Li1/3Ti5/3]O-4 and LiNiO2 faded more rapidly than that of a cell based on natural graphite and LiNiO2 in spite of superior coulombic efficiency of Li[Li1/3Ti5/3]O-4 (very close to 100%) compared with that of natural graphite (about 98%). The important role of the electrolyte upon the capacity retention of lithium-ion cells is described and specific problems to extend cycle life are discussed.
引用
收藏
页码:99 / 102
页数:4
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