Effective reaction rates of a thin catalyst layer

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dc.contributor.authorLenzinger, Michael
dc.contributor.authorSchweizer, Ben
dc.date.accessioned2008-11-05T17:07:04Z
dc.date.available2008-11-05T17:07:04Z
dc.date.issued2008-11-05T17:07:04Z
dc.description.abstractThe catalyst layer in a fuel cell can be described with the help of a system of reaction diffusion equations for the protonic overpotential and the oxygen concentration. The Tafel equation gives an exponential law for the reaction rate, the Tafel slope is a coefficient in this law. We present a rigorous thin layer analysis for two reaction regimes. In the case of thin catalyst layers, the original Tafel slope enters an effective boundary condition. In the case of large protonic overpotentials we derive the effect of a double Tafel slope, essentially a consequence of a thin active region within the catalyst layer.en
dc.identifier.urihttp://hdl.handle.net/2003/25831
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-15782
dc.language.isoende
dc.relation.ispartofseriesPreprints der Fakultät für Mathematik;2008-22de
dc.subjectthin layer analysisen
dc.subjectreaction diffusionen
dc.subjecteffective boundary conditionsen
dc.subjectfuel cellsen
dc.subjectdouble Tafel slopeen
dc.subject.ddc610
dc.titleEffective reaction rates of a thin catalyst layeren
dc.typeTextde
dc.type.publicationtypepreprintde
dcterms.accessRightsopen access

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