A facile approach for the preparation of cross-linked sulfonated polyimide membranes for fuel cell application

被引：84

作者：

Fang, Jianhua

Zhai, Fengxia

Guo, Xiaoxia

Xu, Hongjie

Okamoto, Ken-ichi

机构：

[1] Shanghai Jiao Tong Univ, Sch Chem & Chem Technol, Shanghai 200240, Peoples R China

[2] Yamaguchi Univ, Fac Engn, Dept Adv Mat & Engn, Yamaguchi 7558611, Japan

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2007年 / 17卷 / 11期

关键词：

D O I：

10.1039/b613561g

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 facile approach has been successfully developed for the preparation of a series of cross-linked sulfonated polyimide (SPI) membranes via the condensation reaction between the sulfonic acid groups and the activated hydrogen atoms of SPIs in the presence of phosphorous pentoxide : methanesulfonic acid in the ratio of 1 : 10 by weight (PPMA, method 1) or phosphorous pentoxide only ( method 2). The resulting sulfonyl linkages are very stable and the cross-linked SPI membranes showed greatly improved water stability in comparison with the uncross-linked ones while high proton conductivity was maintained.

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页码：1102 / 1108

页数：7

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