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Sulfonation Mechanism of Polysulfone in Concentrated Sulfuric Acid for Proton Exchange Membrane Fuel cell Applications
The sulfonated polysulfone is a competitive proton-conducting material for proton exchange membrane fuel cells because of its relatively low cost and adequate performance compared with the perfluorinated sulfonic acid ionomers. This material can be economically synthesized by postsulfonation of comm...
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Published in: | ACS omega 2020-06, Vol.5 (22), p.13219-13223 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The
sulfonated polysulfone is a competitive proton-conducting material
for proton exchange membrane fuel cells because of its relatively
low cost and adequate performance compared with the perfluorinated
sulfonic acid ionomers. This material can be economically synthesized
by postsulfonation of commercial polysulfone; however, the inadequate
sulfonation degree and the chain-scission degradation during sulfonation
prevent the further optimization of its overall performance. In this
work, the sulfonation mechanism of polysulfone is studied in terms
of the transition state and activation energy based on density functional
theory calculations, and the optimization of sulfonation processing
parameters are discussed. |
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ISSN: | 2470-1343 2470-1343 |
DOI: | 10.1021/acsomega.0c01252 |