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Advances in proton-exchange membranes for fuel cells: an overview on proton conductive channels (PCCs)

Advances in proton-exchange membranes for fuel cells: an overview on proton conductive channels (PCCs)

Physical Chemistry Chemical Physics 15(14): 4870-4887

Proton-exchange membranes (PEM) display unique ion-selective transport that has enabled a breakthrough in high-performance proton-exchange membrane fuel cells (PEMFCs). Elemental understanding of the morphology and proton transport mechanisms of the commercially available NafionĀ® has promoted a majority of researchers to tune proton conductive channels (PCCs). Specifically, knowledge of the morphology-property relationship gained from statistical and segmented copolymer PEMs has highlighted the importance of the alignment of PCCs. Furthermore, increasing efforts in fabricating and aligning artificial PCCs in field-aligned copolymer PEMs, nanofiber composite PEMs and mesoporous PEMs have set new paradigms for improvement of membrane performances. This perspective profiles the recent development of the channels, from the self-assembled to the artificial, with a particular emphasis on their formation and alignment. It concludes with an outlook on benefits of highly aligned PCCs for fuel cell operation, and gives further direction to develop new PEMs from a practical point of view.

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Accession: 051398753

Download citation: RISBibTeXText

PMID: 23455620

DOI: 10.1039/c3cp50296a

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