Ionomer content in the catalyst layer of polymer electrolyte membrane fuel cell (PEMFC): Effects on diffusion and performance

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dc.authorid0000-0003-3736-5049
dc.contributor.authorSuzuki, Ai
dc.contributor.authorSen, Unal
dc.contributor.authorHattori, Tatsuya
dc.contributor.authorMiura, Ryuji
dc.contributor.authorNagumo, Ryo
dc.contributor.authorTsuboi, Hideyuki
dc.contributor.authorMiyamoto, Akira
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2011
dc.departmentNiğde ÖHÜ
dc.description.abstractThe percolating paths of the carbons and electrolytes in a cathode catalyst layer (CCL) could be successfully visualized in three-dimensions in order to investigate both the electronic and ionic connectivity by modeling a three-dimensional (3-D), meso-scale CCL of a polymer electrolyte membrane fuel cell (PEMFC). The effective Knudsen diffusion coefficients could also be obtained by computing pore tortuosity values. Electrochemical simulation studies were carried out by feeding air at 70 degrees C. Low platinum (Pt) loading (0.1 mg cm(-2)) catalysts with ionomer contents ranging from 14 to 50% were studied. The performance of a PEMFC electrode was affected by the ionomer content which is optimal at about 33%. In this case, both electronic and ionic connectivity produced the broadest active surface area of the Pt catalyst. The polarization drop tendency was in good agreement with the experiment, and this percolation study could successfully explain the existence of an optimum amount of ionomer. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
dc.identifier.doi10.1016/j.ijhydene.2010.11.076
dc.identifier.endpage2229
dc.identifier.issn0360-3199
dc.identifier.issue3
dc.identifier.scopus2-s2.0-79551615349
dc.identifier.scopusqualityQ1
dc.identifier.startpage2221
dc.identifier.urihttps://dx.doi.org/10.1016/j.ijhydene.2010.11.076
dc.identifier.urihttps://hdl.handle.net/11480/4750
dc.identifier.volume36
dc.identifier.wosWOS:000288825800039
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartofINTERNATIONAL JOURNAL OF HYDROGEN ENERGY
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCatalyst layer model
dc.subjectIonomer content
dc.subjectEffective Knudsen diffusion
dc.subjectPercolation
dc.titleIonomer content in the catalyst layer of polymer electrolyte membrane fuel cell (PEMFC): Effects on diffusion and performance
dc.typeArticle

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