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A current distribution model of a porous fuel cell electrode

Lookup NU author(s): Emeritus Professor Keith Scott, Dr Panagiotis Argyropoulos

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Abstract

A one-dimensional model of the current and potential distribution in a porous electrode, which accounts for internal limitations of mass transport is presented. The electrode kinetics of the reaction are described by the Tafel approximation and the mass transport limitations are described by a mass transfer coefficient. The model is solved analytically to give a convenient algebraic equation to predict the influence of electrode parameters, such as conductivity, thickness and specific surface area on electrode polarisation. The model can also predict the influence of reactant concentration and internal mass transport on the electrode polarisation behaviour. The predicted electrode polarization is in agreement with that observed for a porous platinum based anode. © 2004 Elsevier B.V. All rights reserved.

Publication metadata

Author(s): Scott K, Argyropoulos P

Publication type: Article

Publication status: Published

Journal: Journal of Electroanalytical Chemistry

Year: 2004

Volume: 567

Issue: 1

Pages: 103-109

Print publication date: 01/06/2004

ISSN (print): 0022-0728

ISSN (electronic): 1873-2569

Publisher: Elsevier B.V.

URL: http://dx.doi.org/10.1016/j.jelechem.2003.12.017

DOI: 10.1016/j.jelechem.2003.12.017

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