Pressure dependence of the ionic conductivity of poly(oxyethylene)-LiTFSI polymer electrolytes

被引：11

作者：

Alloin, F ^{[1
]}

Bolton, J ^{[1
]}

Souquet, JL ^{[1
]}

Duclot, M ^{[1
]}

机构：

[1] Univ Grenoble 1, Lab Electrochim & Physicochim Mat & Interfaces, UMR CNRS INPG 5631, ENSEEG, F-38402 St Martin Dheres, France

来源：

SOLID STATE IONICS | 1998年 / 110卷 / 1-2期

关键词：

salt polymer complexes; ionic conductivity; activation volume; isostatic pressure;

D O I：

10.1016/S0167-2738(98)00123-4

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：

Variations in ionic conductivity of poly(oxyethylene)-LiTFSI complexes with pressure have been studied. In the 1-5000 bar range, the ionic conductivity decreases by about two orders of magnitude. The apparent activation volume Delta V*, experimentally determined by the relationship ((partial derivative ln sigma)/partial derivative P))(tau) = - (Delta V*)/(RT), is close to 25 cm(3) mol(-1) and does not significantly varies with LiTFSI concentration or polymer cross-linking. The ionic conductivity variations with pressure is interpreted by a decrease of the available free volume reducing the charge carrier mobility. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：15 / 20

页数：6

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