Issue 11, 2007
From the journal:

Journal of Materials Chemistry

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

Jianhua Fang,*a   Fengxia Zhai,a   Xiaoxia Guo,a   Hongjie Xua  and  Ken-ichi Okamotob  

* Corresponding authors

a School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
E-mail: jhfang@sjtu.edu.cn

b Department of Advanced Materials & Engineering, Faculty of Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan

Abstract

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.

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

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Article information

DOI
https://doi.org/10.1039/B613561G
Article type
Paper
Submitted
18 Sep 2006
Accepted
29 Nov 2006
First published
22 Dec 2006

J. Mater. Chem., 2007,17, 1102-1108

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

J. Fang, F. Zhai, X. Guo, H. Xu and K. Okamoto, J. Mater. Chem., 2007, 17, 1102 DOI: 10.1039/B613561G

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