Multiscale modeling prediction of PEMFC MEA durability under automotive-operating conditions

A. A. Franco, R. Coulon, R. F. De Morais, S. K. Cheah, Ali Kachmar, M. A. Gabriel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)

Abstract

In this paper we present a comprehensive physical-based model of the PEMFC materials degradation allowing the prediction of the MEA durability as a function of the operation conditions, initial material loadings and electrodes microstructure. The approach, built within a modular multiscale non-equilibrium thermodynamics framework, couples atomistic-based descriptions of catalyst contamination/oxidation/dissolution/ripening, dissolved catalyst migration in the ionomer, C catalyst-support corrosion and chemical PEM degradation, with the degradation-induced nano/microstructural and transport properties (of reactants and charges) evolution. By describing the feedback between the instantaneous performance and the material aging phenomena, the model provides new insights on the competition between the different degradation processes under automotive-operating conditions. The predictive capabilities of our approach are illustrated in this paper through four applicative examples: 1) Pt xCoy catalysts degradation 2) competition of PEM and cathode C degradation 3) synergies between anodic CO contamination and PEM and cathode C degradation, and 4) synergies between Pt and C degradation.

Original languageEnglish
Title of host publicationECS Transactions
Pages65-79
Number of pages15
Volume25
Edition1 PART 1
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event9th Proton Exchange Membrane Fuel Cell Symposium (PEMFC 9) - 216th Meeting of the Electrochemical Society - Vienna, Austria
Duration: 4 Oct 20099 Oct 2009

Other

Other9th Proton Exchange Membrane Fuel Cell Symposium (PEMFC 9) - 216th Meeting of the Electrochemical Society
CountryAustria
CityVienna
Period4/10/099/10/09

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Franco, A. A., Coulon, R., De Morais, R. F., Cheah, S. K., Kachmar, A., & Gabriel, M. A. (2009). Multiscale modeling prediction of PEMFC MEA durability under automotive-operating conditions. In ECS Transactions (1 PART 1 ed., Vol. 25, pp. 65-79) https://doi.org/10.1149/1.3210560