Solid asymmetric electrochemical capacitors using proton-conducting polymer electrolytes

被引：30

作者：

Lian, Keryn ^{[1
]}

Tian, Qifeng ^{[1
]}

机构：

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

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 04期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Polymer electrolyte; Electrochemical capacitor; Asymmetric; Heteropoly acid; HETEROPOLY ACID ELECTROLYTES; MEMBRANE FUEL-CELLS; SUPERCAPACITORS; TRANSITION; BEHAVIOR; SILICA;

D O I：

10.1016/j.elecom.2010.01.032

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Solid asymmetric electrochemical capacitors (EC) using polyvinyl alcohol (PVA)-heteropoly acid (HPA) electrolytes and RuO(2)-graphite electrodes were developed. The devices were about 0.2 mm thick and had a working voltage window of 0-1.5 V. 50% wider than that of any proton-conducting symmetric EC. Pseudocapacitance from HPA contributes to the total capacitance of the asymmetric EC within a certain potential window. The PVA-HPA polymers have been proven to function both as electrolyte and as pseudocapacitive electrode material in EC cells. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：517 / 519

页数：3

共 18 条

[1]

[Anonymous], 1998, P 8 INT SEM DOUBL LA

[2]

BAI L, 1999, Patent No. 5872698

[3] TRANSITION FROM SUPERCAPACITOR TO BATTERY BEHAVIOR IN ELECTROCHEMICAL ENERGY-STORAGE [J].