Transport properties of hexanoyl chitosan-based gel electrolyte

被引：59

作者：

Winie, Tan ^{[1
]}

Arof, A. K. ^{[1
]}

机构：

[1] Univ Malaya, Dept Phys, Kuala Lumpur 50603, Malaysia

来源：

IONICS | 2006年 / 12卷 / 02期

关键词：

hexanoyl chitosan; LiCF3SO3; ethylene carbonate; diffusion; ac conductivity;

D O I：

10.1007/s11581-006-0026-2

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：

Films of hexanoyl chitosan-based polymer electrolyte were prepared by the technique of solution casting. The effect of plasticizer on the transport properties of hexanoyl chitosan:lithium trifluoromethanesulfonate (LiCF3SO3) electrolytes have been investigated. The plasticizer used was ethylene carbonate (EC). The highest room temperature conductivity achieved in the EC-plasticized hexanoyl chitosan-based electrolytes is 2.75x10(-5) S cm(-1). The Rice and Roth model was used to explain the variations in the dc conductivity observed. The exponent, s, in Jonscher's universal power law equation sigma(omega)=sigma(dc)+A omega(s), was analyzed as a function of temperature for the sample containing 30 wt% of EC. The analysis suggests that the conduction mechanism follows that proposed by the overlapping large polaron tunneling model.

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页码：149 / 152

页数：4

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