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

被引：30

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

页码：874 / 876

页数：3

共 17 条

[11] Structural and transport effects of doping perfluorosulfonic acid polymers with the heteropoly acids, H3PW12O40 or H4SiW12O40 [J].

Meng, Fanqin ;

Aieta, Niccolo V. ;

Dec, Steven F. ;

Horan, James L. ;

Williamson, Don ;

Frey, Matthew H. ;

Pham, Phat ;

Turner, John A. ;

Yandrasits, Michael A. ;

Hamrock, Steven J. ;

Herring, Andrew M. .

ELECTROCHIMICA ACTA, 2007, 53 (03) :1372-1378

[12] HIGH-CONDUCTIVITY SOLID PROTON CONDUCTORS - DODECAMOLYBDOPHOSPHORIC ACID AND DODECATUNGSTOPHOSPHORIC ACID CRYSTALS [J].

NAKAMURA, O ;

KODAMA, T ;

OGINO, I ;

MIYAKE, Y .

CHEMISTRY LETTERS, 1979, (01) :17-18

[13] Synthesis and characterization of proton-conducting materials containing dodecatungstophosphoric and dodecatungstosilic acid supported on silica [J].

Staiti, P ;

Freni, S ;

Hocevar, S .

JOURNAL OF POWER SOURCES, 1999, 79 (02) :250-255

[14] All solid-state supercapacitor with phosphotungstic acid as the proton-conducting electrolyte [J].

Wang, YG ;

Zhang, XG .

SOLID STATE IONICS, 2004, 166 (1-2) :61-67

[15] All solid-state electric double-layer capacitors based on alkaline polyvinyl alcohol polymer electrolytes [J].

Yang, CC ;

Hsu, ST ;

Chien, WC .

JOURNAL OF POWER SOURCES, 2005, 152 (01) :303-310

[16]

Zhang CH, 2009, NAT MATER, V8, P580, DOI [10.1038/NMAT2474, 10.1038/nmat2474]

[17]

[No title captured]

← 1 2 →