Sulfonated bisphenol-A-polysulfone based composite PEMs containing tungstophosphoric acid and modified by electron beam irradiation

Composite sulfonated bisphenol-A-polysulfone (SPSF) based PEMs, containing tungstophosphoric acid (TPA) and modified by electron beam (EB) irradiation with doses of 50 and 100kGy, were prepared and characterized by a number of physico-chemical methods. The probability of the cross-linking was increa...

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Bibliographic Details
Published in:International journal of hydrogen energy 2012-04, Vol.37 (7), p.6228-6235
Main Authors: Furtado Filho, Acácio A.M., Gomes, Aílton S.
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Applied sciences
Composite PEM
Cross-linking
Crosslinking
Electron beam
Energy
Exact sciences and technology
Fuels
Heteropolyacid
Hydrogen
Polysulfone
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Summary:Composite sulfonated bisphenol-A-polysulfone (SPSF) based PEMs, containing tungstophosphoric acid (TPA) and modified by electron beam (EB) irradiation with doses of 50 and 100kGy, were prepared and characterized by a number of physico-chemical methods. The probability of the cross-linking was increased by post treatment of the irradiated membranes at 180°C for 8h into a vacuum oven. The cross-linking strongly affected membrane properties, reducing their swelling, but at the same time decreasing their proton conductivity. The proton conductivity of the membranes was measured by a two electrode ac impedance technique using a frequency response analyzer. The PEMs performance was tested in H2/O2 fuel cell (FC) and found to approach that of Nafion® 117 commercial PEM at the same conditions. The PEMs composite stability was adequate at least for 2 days, during which no degradation of the performance was observed.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2011.10.056