Development of solid polymer lithium secondary batteries

被引：18
|
作者：
Kuratomi, J [1 ]
Iguchi, T [1 ]
Bando, T [1 ]
Aihara, Y [1 ]
Ono, T [1 ]
Kuwana, K [1 ]
机构：
[1] Yuasa Corp, Dept 5, Adv Technol Div, Odawara, Kanagawa 2500001, Japan
来源：
JOURNAL OF POWER SOURCES | 2001年 / 97-8卷
关键词：
solid-state polymer electrolyte; lithium secondary battery; 4 V class; long life;
D O I：
10.1016/S0378-7753(01)00611-5
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：
To develop a long-life secondary lithium battery using solid-state polymer electrolyte system, several factors of the polymer electrolyte were examined by using metal lithium and LiCoO2 electrodes. The lithium salts used were LiBF4, LiN(SO2CF3)(2) (abbreviated as LiTFSI) and LiN(SO2CF3)(SO2C4F9) (abbreviated as LiTNSI), and the matrix polymer was cross-linked random copolymer of ethylene oxide and propylene oxide. Passivation films formed on the metal lithium surface after storage at 60 degreesC were analyzed by X-ray photoelectron spectroscopy (XPS). The battery performance was found to depend significantly both on species and concentration of lithium salts. At present, our best achievement of the cycle ability for the 4 V class secondary battery was over 300 cycles at a current rate of C/8 at 60 degreesC by using LiTFSI. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：801 / 803
页数：3
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