Ionic conduction behavior of network polymer electrolytes based on phosphate and polyether copolymers

被引：104

作者：

Kim, JY ^{[1
]}

Kim, SH ^{[1
]}

机构：

[1] Hanyang Univ, Coll Engn, Div Chem Engn, Seoul 133791, South Korea

来源：

SOLID STATE IONICS | 1999年 / 124卷 / 1-2期

关键词：

network polymer electrolyte; ionic conductivity; poly(ethylene; olycol); poly(tetramethylene glycol); phosphate;

D O I：

10.1016/S0167-2738(99)00104-6

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：

Polymer electrolytes based on phosphate-polyether networks (PPNs) were synthesized by polycondensation reaction of phosphorus oxychloride (POCl3) with PEG/PTMG (70/30) copolymers to improve ionic conductivity at ambient temperatures. Ion conductivity and thermal behavior of PPN series-LiCF3SO3 complexes were investigated with various salt concentration, temperatures and plasticizer contents. Ethylene carbonate (EC) as a plasticizer was added to a phosphate-polyether network to improve ionic conductivity at room temperature. The PPN1000/LiCF3SO3/EC electrolyte exhibited ionic conductivity of 1.01 x 10(-4) S cm(-1) at 25 degrees C. PPN1000-LiCF3SO3 complexes showed a higher ionic conductivity than PPN600-LiCF3SO3 complexes due to the solvating ability of network polymer electrolytes. The network structure of PPN series-LiCF3SO3 complexes caused a considerable decrease in the degree of crystallinity, resulting in a high ionic conductivity. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：91 / 99

页数：9

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