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dc.contributor.authorSchweizer, Ben-
dc.contributor.authorMihailovici, Michaela-
dc.identifier.citationMihailovici, Michaela; Schweizer, Ben: : Effective model for the cathode catalyst layer in fuels cells. In: Asymptotic Analysis Nr. 1-2, Jg. 57(2008), S. 105-123, preprintde
dc.description.abstractWe study a pore scale model for the catalyst layer on the cathod e side of a fuel cell, where hydrogen and oxygen combine at catalyst sites. Our model distinguishes microscopically the phases of rigid structure, electrolyte, pore-space, and catalyst. The oxygen concentration and the protonic potential are described by diffu sion equations with reaction terms on the catalyst's surface. For the limit of a vanishing pore size we derive homogenized equations of reaction-diffusion type and provide formulae for the effective coeffici ents. A dimensional reduction shows that a thin catalyst layer can be replaced by a boundary condition. We furthermore analyze the effect of a doubling of the Tafel slope for high protonic potentials and determine effective constants.en
dc.publisherIOS Pressde
dc.rights© 2008 – IOS Press and the authors. All rightsreserved-
dc.subjectsurface reactionen
dc.subjecteffective equationen
dc.subjectfuel cellen
dc.titleEffective model for the cathode catalyst layer in fuels cellsen
dcterms.accessRightsopen access-
Appears in Collections:Schweizer, Ben Prof. Dr.

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