Blend membranes based on acid-base interactions for operation at high methanol concentrations

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DOIResolve DOI: http://doi.org/10.1149/1.3005984
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TypeArticle
Journal titleJournal of the Electrochemical Society
Volume156
Issue1
PagesB46B50; # of pages: 5
AbstractThe performances in direct methanol fuel cells (DMFCs) of membrane electrode assemblies (MEAs) fabricated with blend membranes based on sulfonated poly(ether ether ketone) (SPEEK) and poly(sulfone) bearing 2-amino-benzimidazole have been compared with SPEEK and Nafion ionomers in the anode and cathode catalyst layers as well as with that of MEAs fabricated with Nafion 115 membrane and Nafion ionomer in the electrodes. The SPEEK ionomer offers better compatibility with a lower interfacial resistance compared to Nafion ionomer when used with the blend membranes. Also, MEAs fabricated with the blend membrane and SPEEK ionomer in the electrodes exhibit better performance in DMFC compared to that with Nafion membrane and Nafion ionomer due to lower methanol crossover. Moreover, MEAs fabricated with the blend membranes exhibit less performance dependence on methanol concentration (1–10 M) compared to those fabricated with the Nafion membranes, making the former attractive to operate at high methanol-feed concentrations.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Institute for Chemical Process and Environmental Technology
Peer reviewedYes
NRC number50895
NPARC number14407061
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Record identifier0daba4fd-efa7-469d-bbe2-7ad876095b0a
Record created2010-03-01
Record modified2016-05-09
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