Proton exchange membranes based on sulfonimide for fuel cell applications

被引：26

作者：

Rahman, K ^{[1
]}

Aiba, G ^{[1
]}

Susan, A ^{[1
]}

Watanabe, M ^{[1
]}

机构：

[1] Yokohama Natl Univ, Dept Chem & Biotechnol, Hodogaya Ku, Yokohama, Kanagawa 2408501, Japan

来源：

ELECTROCHIMICA ACTA | 2004年 / 50卷 / 2-3期

关键词：

sulfonimide; pK(a); water adsorption isotherm; proton conductivity; proton exchange membrane fuel cell;

D O I：

10.1016/j.electacta.2003.12.077

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A series of new acid monomers with different acid groups based on sulfonimide were synthesized. Acidity of the sulfonimide monomers could be controlled by changing substituted groups on the sulfonimides. Copolymerization of the acid monomers was carried out with acrylonitrile, and the proton exchange membranes were cast from solutions of the resulting copolymers. The membranes were mechanically strong, flexible, and transparent. Adsorption isotherm behavior for water uptake by the membranes was found to depend on the acidity of the starting monomers and hydrophobicity and hydrophilicity of the copolymers. The membranes exhibited high proton conductivities under humidifying conditions, which depended fairly on temperature as well as the water uptake. At a constant relative humidity, membranes of the strong acids showed conductivities higher than those of the weak acids. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：633 / 638

页数：6

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