Characterizations of proton conducting polymer electrolytes for electrochemical capacitors

被引：38

作者：

Gao, Han ^{[1
]}

Lian, Keryn ^{[1
]}

机构：

[1] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON M5S 3E4, Canada

来源：

ELECTROCHIMICA ACTA | 2010年 / 56卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Solid polymer electrolyte; Heteropoly acid; Electrochemical capacitor; DSC; XRD; FTIR; HETEROPOLY ACID ELECTROLYTES; SILICOTUNGSTIC ACID; COMPOSITE MEMBRANES; POLYVINYL-ALCOHOL; BLEND; HYDROGEL; SILICA; IR;

D O I：

10.1016/j.electacta.2010.09.036

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Solid polymer electrolytes containing phosphotungstic acid (PWA) and/or silicotungstic acid (SiWA) in polyvinyl alcohol (PVA) were investigated for their proton conductivities. Enhanced conductivity was obtained when mixing PWA and SiWA at equal ratio. This polymer electrolyte was found viable for electrochemical capacitors. Thermal and structural analyses were conducted with DSC, XRD, and FTIR.The polymer electrolyte exhibited a different structure and different thermal properties from its respective components. The polymer electrolyte retained its original Keggin structure but contained crystallized protonated water in the form of H5O2+. The protonated water may contribute to the proton conductivity of the polymer electrolyte. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：122 / 127

页数：6

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