Heteropoly acid electrolytes for double-layer capacitors and pseudocapacitors

被引：24

作者：

Lian, Keryn ^{[1
]}

Li, Changming ^{[2
]}

机构：

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

[2] Nanyang Technol Univ, Div BioEngn, Sch Chem & Biomed Engn, Singapore 637457, Singapore

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2008年 / 11卷 / 09期

关键词：

D O I：

10.1149/1.2955861

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Two heteropoly acids, phosphotungstic acid (PWA) and silicotungstic acid (SiWA), were studied as aqueous electrolytes for applications on electrochemical storage devices. Their performance was compared to the H(2)SO(4) benchmark with respect to both double-layer and pseudocapacitance using cyclic voltammetry, electrochemical impedance spectroscopy, and self-discharge measurements. Both heteropoly acids showed a very good proton conductivity in aqueous solutions, with overall performance comparable to H(2)SO(4). Therefore, in spite of their electrochemical active nature, PWA and SiWA are feasible as electrolytes provided the operation window is chosen appropriately. (C) 2008 The Electrochemical Society.

引用

页码：A158 / A162

页数：5

共 18 条

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