Polyvinyl alcohol-heteropoly acid polymer electrolytes and their applications in electrochemical capacitors

被引：29
|
作者：
Gao, Han [1 ]
Tian, Qifeng [1 ]
Lian, Keryn [1 ]
机构：
[1] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON M5S 3E4, Canada
来源：
SOLID STATE IONICS | 2010年 / 181卷 / 19-20期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Electrochemical capacitor; Solid polymer electrolyte; Heteropoly acid; Pseudocapacitor; DOUBLE-LAYER CAPACITORS; PHOSPHOTUNGSTIC ACID; PROTON; MEMBRANES;
D O I：
10.1016/j.ssi.2010.05.006
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：
A solid polymer electrolyte with a poly (vinyl-alcohol) (PVA) matrix and a mixture of H3PW12O40 (PWA) and H4SiW12O40 (SiWA) as proton conductor was developed. The proton conductivity of this polymer electrolyte reached 0.013 scm(-1) at room temperature with a very low activation energy of 3.9 kJ mol(-1) at its optimal ratio (when SiWA and PWA were mixed in equal proportions). The room temperature proton conductivity was higher than that of pure PVA-PWA or PVA-SiWA electrolytes. The solid polymer electrolyte also showed good stability over time and at varying levels of relative humidity. A pseudocapacitor using this solid polymer electrolyte was demonstrated and showed good high rate performance and cycle life. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：874 / 876
页数：3
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