Improvement of the ionic conductivity for PEO-LiCF3SO3 complex by supercritical CO2 treatment

被引：13

作者：

Tominaga, Y ^{[1
]}

Izumi, Y ^{[1
]}

Kwak, GH ^{[1
]}

Asai, S ^{[1
]}

Sumita, M ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Chem & Mat Sci, Meguro Ku, Tokyo 1528552, Japan

来源：

MATERIALS LETTERS | 2002年 / 57卷 / 04期

关键词：

supercritical carbon dioxide (scCO(2)); poly(ethylene oxide) (PEO); ionic conductivity; glass transition temperature; lithium trifluoromethane sulfonate (LiCF3SO3) salt dissociation;

D O I：

10.1016/S0167-577X(02)00871-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We developed a new concept for improving the ionic conductivity of polyether electrolytes. It was applied supercritical carbon dioxide (scCO(2)) to the poly(ethylene oxide) (PEO)-lithium trifluoromethane sulfonate (LiCF3SO3) mixture in order to improve the chain mobility in the amorphous phase. The ionic conductivity at room temperature of the mixed sample was more than 10 times improved by the scCO(2) treatment. Moreover, we found a phenomenon that the dissociation of LiCF3SO3 in PEO is promoted by the scCO(2) treatment. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：777 / 780

页数：4

共 16 条

[1]

Armand M. B., 1979, Fast Ion Transport in Solids. Electrodes and Electrolytes, P131

[2] POLYMER ELECTROLYTES [J].