A Steady-State Impedance Model for a PEMFC Cathode

Guo, Qingzhi, and Ralph E. White. 2004. “A Steady-State Impedance Model for a PEMFC Cathode”. Journal of The Electrochemical Society 151 (4): E133.

Abstract

A 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 O-2 is assumed to take place in the flooded agglomerate particles. Newman s porous electrode theory is applied to determine over-potential distributions. (C) 2004 The Electrochemical Society.
Last updated on 09/07/2023