Theory of ionic conduction in organic solvents and gel electrolytes:: application to the system DG/LiCF3SO3 and diacrylate/DG/LiCF3SO3

被引：8

作者：

Claude-Montigny, B

Rioteau, E

Lemordant, D

Topart, P

Bosser, G

机构：

[1] UFR Sci & Tech, PIMIR, EA 2098, Lab Phys Chim Interfaces & Milieux Reactionnels, F-37200 Tours, France

[2] CEA Le Ripault, Dept Mat, F-37200 Monts, France

来源：

ELECTROCHIMICA ACTA | 2001年 / 47卷 / 04期

关键词：

polymer electrolytes; gel electrolytes; ion pairs; triple ions; lithium triflate; diacrylate polymers; diglyme;

D O I：

10.1016/S0013-4686(01)00739-3

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Gelified electrolytes have been realized by the photopolymerization of tetraethylene glycol diacrylate (TEG) or 1,3-butanediol diacrylate (BDD). The plasticizer is 2-methoxyethylether (DG) and the conductivity is obtained by the addition of lithium trifluoromethane sulfonate (LiTF). As carboxylate groups of BDD have less solvating power for Li+ ions than the ether groups of DG, the conductivity of the BDD/DG gel is dependent on the conductivity of the interstitial liquid phase only. In TEG/DG gel electrolytes, a competitive solvation for Li+ ions exists between the ether sites of TEG and DG, leading to a decrease of ionic mobilities and conductivities. A dynamical theoretical model is proposed to discuss the experimental results. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：533 / 541

页数：9

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