Journal
SIAM JOURNAL ON APPLIED MATHEMATICS
Volume 70, Issue 2, Pages 488-509Publisher
SIAM PUBLICATIONS
DOI: 10.1137/08071973X
Keywords
modeling; PEFC; gas-diffusion layer; cathode; water management; quasi potential
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Funding
- U. S. Department of Energy [DE-AC02-05CH11231]
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In this paper, a quasi-potential approach along with conformal mapping is used to model the diffusion media of a polymer-electrolyte fuel cell. This method provides a series solution that is grid independent and only requires integration along a single boundary to solve the problem. The approach accounts for nonisothermal phenomena, two-phase flow, correct placement of the electronic potential boundary condition, and multilayer media. The method is applied to a cathode diffusion medium to explore the interplay between water and thermal management and performance, the impact of the rib-to-channel ratio, and the existence of diffusion under the rib and flooding phenomena.
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