Electrochemical properties of amorphous comb-shaped composite PEO polymer electrolyte

被引：23

作者：

Chung, JS

Sohn, HJ ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151742, South Korea

[2] Seoul Natl Univ, Dept Minerals & Petr Engn, Seoul 151742, South Korea

来源：

JOURNAL OF POWER SOURCES | 2002年 / 112卷 / 02期

关键词：

polyethylene oxide; trioxyethylene; composite polymer electrolyte; CuS cathode;

D O I：

10.1016/S0378-7753(02)00484-6

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：

The electrochemical behaviour of a polyethylene oxide (PEO)-based composite polymer electrolyte are studied. The crystallinity of the PEO is suppressed by using a comb-shaped polymer to improve polymer chain mobility. An amorphous comb-shaped polymer, 'TEC-24', with a side-chain content of 24 mol%, is designed and fine silica powder is dispersed within it to enhance the mechanical properties above the melting point. The composite polymer electrolyte has an ionic conductivity of 1.6 x 10(-4) and 1.6 x 10(-3) S cm(-1) at 30 and 90 degreesC, respectively, with an electrochemical stability window close to 5.0 V, even at 80 degreesC (versus Li/Li+). The polymer electrolyte is evaluated using CuS as a cathode material and shows better cycle performance than that obtained with a liquid electrolyte. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：671 / 675

页数：5

共 19 条

[1] Transport and interfacial properties of composite polymer electrolytes [J].