A Steady-State Impedance Model for a PEMFC Cathode
2004; Institute of Physics; Volume: 151; Issue: 4 Linguagem: Inglês
10.1149/1.1648024
ISSN1945-7111
Autores Tópico(s)Advanced battery technologies research
ResumoA model for the simulation of the steady-state impedance response of a polymer electrolyte membrane fuel cell (PEMFC) cathode is presented. The catalyst layer of the electrode is assumed to consist of many flooded spherical agglomerate particles surrounded by a small volume fraction of gas pores. Stefan-Maxwell equations are used to describe the multicomponent gas-phase transport occurring in both the gas diffusion layer and the catalyst layer of the electrode. Liquid-phase diffusion of is assumed to take place in the flooded agglomerate particles. Newman's porous electrode theory is applied to determine over-potential distributions. © 2004 The Electrochemical Society. All rights reserved.
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