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A Pore-Scale Multiphysics Method to Study PEMFC Catalyst Layers

Article of Honda R&D Technical Review Vol.28 No.1

Summary

Three dimensional pore-scale numerical approach to study the effects of structural parameters, material properties, and operating conditions on the performance of catalyst layer of proton exchange membrane fuel cell is developed. The proposed approach includes a novel stochastic reconstruction method and a pore-scale fully coupled simulation model. The pore-scale simulation model is based on a hybrid lattice Boltzmann-Finite Difference method. Multi-physics phenomena are taken into account and fully coupled in the model including the electrochemical reactions, water generation and evaporation, mass transport through electrode pores and ionomer, electron transport through carbon support and catalyst particles, and proton transport through ionomer. The proposed method is validated with experimental data and shows good agreement. The case studies show that the structure of catalyst layer and operating condition impacts on the overall electrode performances.

Reference

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Author (organization or company)

Koji MORIYAMA(Automobile R&D Center)、Jinfen KANG(The Ohio State University)、Seung Hyun KIM(The Ohio State University)

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