Chitosan-lithium triflate electrolyte in secondary lithium cells

被引：50

作者：

Morni, NM ^{[1
]}

Arof, AK ^{[1
]}

机构：

[1] Univ Malaya, Ctr Fdn Studies Sci, Div Phys, Kuala Lumpur 50603, Malaysia

来源：

JOURNAL OF POWER SOURCES | 1999年 / 77卷 / 01期

关键词：

chitosan; ethylene carbonate; conductivity; secondary cells;

D O I：

10.1016/S0378-7753(98)00170-0

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 prepared from high molecular weight chitosan are shown to exhibit the highest electrical conductivity of 2.14 x 10(-7) S cm(-1). The electrical conductivity is further enhanced to 1.03 x 10(-5) S cm(-1) when ethylene carbonate (EC) is used as a plasticizer. X-ray diffraction (XRD) shows that EC disrupts the crystalline nature of chitosan acetate. Infrared (IR) spectroscopy reveals a shift in the amide band from 1590 to 1575 cm(-1) on addition of LiCF3SO3. A film with a (chitosan + 0.4 g EC) to LiCF3SO3 ratio of 80:20 gives the highest electrical conductivity of 3.0 x 10(-4) S cm(-1). This film is used as an electrolyte for the fabrication of chitosan-based secondary cells, viz., Li/chitosan-EC-LiCF3SO3/V2O5. The characteristics of the cells are presented in this paper. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：42 / 48

页数：7

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