Degradation of a fuel cell membrane, as revealed by micro-Raman spectroscopy

被引：79

作者：

Mattsson, B ^{[1
]}

Ericson, H

Torell, LM

Sundholm, F

机构：

[1] Chalmers Univ Technol, Dept Expt Phys, S-41296 Gothenburg, Sweden

[2] Univ Helsinki, Polymer Chem Lab, FIN-00014 Helsinki, Finland

来源：

ELECTROCHIMICA ACTA | 2000年 / 45卷 / 8-9期

基金：

芬兰科学院;

关键词：

poly(vinylidene fluoride); poly(styrene sulfonic acid); proton conducting membrane; confocal Raman spectroscopy; degradation;

D O I：

10.1016/S0013-4686(99)00351-5

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We report a micro-Raman spectroscopic study of a fuel cell membrane subjected to fuel cell testing until a significant decline in efficiency was noted. The membrane, poly(vinylidene fluoride)-graft-poly(styrene sulfonic acid), PVDF-g-PSSA, was produced by electron irradiation of a PVDF film, grafting with polystyrene and subsequent sulfonation. Depth profiles show that severe degradation due to loss of polystyrene sulfonic acid has occurred during the fuel cell run. The remaining amount of polystyrene sulfonic acid is of the order of 5-10% of the initial content. Confocal Raman spectroscopy is found to be an excellent tool for investigating the changes in membrane composition after fuel cell experiments. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1405 / 1408

页数：4

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