Durable sulfonated poly(arylene sulfide sulfone nitrile)s containing naphthalene units for direct methanol fuel cells (DMFCs)

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DOIResolve DOI: http://doi.org/10.1021/ma400154t
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TypeArticle
Journal titleMacromolecules
ISSN0024-9297
1520-5835
Volume46
Issue9
Pages34523460; # of pages: 9
Subjectdirect methanol fuel cell (DMFC); proton exchange membrane (PEM); sulfonated poly(arylene sulfide sulfone nitrile); naphthalene units
AbstractSulfonated poly(arylene sulfide sulfone nitrile)s (SN) were synthesized to investigate the effects of naphthalene units in the polymer backbone on membrane properties. The small and planar naphthalene in the main chain induced semi-crystallinity in the polymer, as confirmed by molecular simulations and wide angle X-ray diffraction patters. The semi-crystalline SN polymer membranes exhibited excellent chemical and mechanical properties, better than those of their phenylene counterpart (SP). In particular, the water uptake and swelling ration of the SN membranes were much lower than those of the SP membranes. Furthermore, the SN membranes exhibited a greatly reduced methanol permeability (9-17 x 10(-8) cm(sq) s(-1)) compared to Nafion 212(330 x 10(-8) cm(sq) s(-1)) at 30 degrees Celsius in 10 M methanol. Moreover, sulfide- and naphthalene-based chemical structure and semi-crystalline nature of hte SN membranes enhanced their DMFC single cell performance and long-term stability during fuel cell operation.
Publication date
PublisherAmerican Chemical Society
LanguageEnglish
AffiliationEnergy, Mining and Environment; National Research Council Canada
Peer reviewedYes
NRC numberNRC-EME-53185
NPARC number21268536
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Record identifiere60179f7-d893-4823-81bf-ded0a8a782ef
Record created2013-09-17
Record modified2016-05-09
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