Membrane electrode assemblies based on hydrocarbon electrolytes with nitrile groups for direct methanol fuel cells

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DOIResolve DOI: http://doi.org/10.1149/05002.2139ecst
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TypeArticle
Proceedings titleECS Transactions
ConferencePRiME 2012: Pacific Rim Meeting on Electronchemical And Solid State Science, October 7-12, 2012, Honolulu, Hawaii
ISSN1938-6737
1938-5862
Volume50
Issue2
Pages21392149; # of pages: 11
AbstractSulfonated poly(aryl ether ether nitrile)s - sPAEEN are promising materials for reducing the methanol permeation from anode to cathode due to the strong polar interchain interactions caused by the nitrile functional groups. This feature allows the preparation of membranes with high proton conductivities and low crossover of methanol and water. Despite similar specific conductivities and lower thickness of the hydrocarbon membranes compared to Nafion 115, HC-MEAs prepared by a classic hot-pressing step show 40-70 % higher values for the cell resistances compared to Nafion 115 based MEAs. Therefore the MEA preparation procedure was changed to reduce losses due to poor lamination between the Nafion-based GDE and the hydrocarbon membrane. The impact of the type of sPAEEN membrane and the MEA preparation together with the cell performance data will be compared with state-of-the art Nafion-based cells and discussed in terms of consequences for the operating conditions for a DMFC system.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; Energy, Mining and Environment
Peer reviewedYes
NRC number53109
NPARC number21268496
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Record identifierc8f77568-1b71-46f8-bbe0-64e9ab3bef11
Record created2013-08-16
Record modified2016-05-09
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