Interfacial vs. internalwater transport resistance of sulfonated hydrocarbon proton-exchange membranes

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DOIResolve DOI: http://doi.org/10.1149/2.009303eel
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TypeArticle
Journal titleECS Electrochemistry Letters
ISSN2162-8726
Volume2
Issue3
PagesF22F24
SubjectCommon knowledge; Hydrophilic domains; Hydrophilic surfaces; Interfacial resistances; Proton exchange membranes; Proton-exchange membrane; Transport resistance; Water permeation; Hydrophilicity; Proton exchange membrane fuel cells (PEMFC); Vapors; Membranes
AbstractLiquid-Vapor Water Permeation (LVP) through sulfonated poly(etheretherketone) (sPEEK) proton exchange membranes, measured upon exposure of membranes to liquid water on one side and water vapor on the other, is lower than for Nafion membranes. Thickness-dependent measurements reveal that both internal and interfacial resistances to water transport are larger for sPEEK membranes, despite sPEEK membranes possessing larger water contents and possessing more hydrophilic surfaces. This report brings to attention the importance of organized hydrophilic domains on net water transport, not just within the membrane, which is common knowledge, but also at its surface. © 2013 The Electrochemical Society.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Energy, Mining and Environment (EME-EME)
Peer reviewedYes
NPARC number21269814
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Record identifier7d85b0f4-cc53-44ed-a397-06b3e8ff7646
Record created2013-12-13
Record modified2016-05-09
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