Degradation of a fuel cell membrane, as revealed by micro-Raman spectroscopy
作者： B Mattsson , H Ericson , L.M Torell , F Sundholm
DOI: 10.1016/S0013-4686(99)00351-5
关键词: Chemical engineering 、 Chemical decomposition 、 Fluoride 、 Polymer chemistry 、 Sulfonic acid 、 Styrene 、 Grafting 、 Polystyrene 、 Chemistry 、 Membrane 、 Electron beam processing
摘要: We report a micro-Raman spectroscopic study of fuel cell membrane subjected to testing until significant decline in efficiency was noted. The membrane, poly(vinylidene fluoride)–graft–poly(styrene sulfonic acid), PVDF–g–PSSA, produced by electron irradiation PVDF film, grafting with polystyrene and subsequent sulfonation. Depth profiles show that severe degradation due loss acid has occurred during the run. remaining amount is order 5–10% initial content. Confocal Raman spectroscopy found be an excellent tool for investigating changes composition after experiments.
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