Characterization of polymer electrolytes based on poly(dimethyl siloxane-co-ethylene oxide)

被引：72

作者：

Fonseca, CP ^{[1
]}

Neves, S ^{[1
]}

机构：

[1] Univ Sao Francisco, LCAM, BR-13251900 Itatiba, SP, Brazil

来源：

JOURNAL OF POWER SOURCES | 2002年 / 104卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

polymer electrolyte; ionic conductivity; copolymer; electrochemical stability window;

D O I：

10.1016/S0378-7753(01)00902-8

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 usefulness of poly(dimethyl siloxane-co-ethylene oxide) (P(DMS-co-EO)) copolymer as an ion conducting matrix was investigated. The electrochemical properties were studied by electrochemical impedance spectroscopy and cyclic voltammetry. The glass transition temperature (T-g) and degree of crystallization as a function of salt concentration were examined by differential scanning calorimetry. Ionic conductivities as high as 2.6 x 10(-4) S cm(-1) were determined at 25 degreesC for copolymers films with 5 wt.% LiClO4. These same films had an electrochemical stability window of 5 V. The pseudo-activation energy as a function of salt concentration was obtained using the Vogel-Tamman-Fulcher (VTF) equation. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：85 / 89

页数：5

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