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Title

Three-dimensional simulation of the cathode in a polymer electrolyte fuel cell (PEFC) by lattice Boltzmann method

Year: 1392
COI: ETEC03_335
Language: EnglishView: 716
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Authors

Gholam Reza Molaeimanesh - Ph.D. candidate, Shiraz University;
Mohammad Hadi Akbari - Associate professor, Shiraz University;

Abstract:

High power density, low operation temperature, high efficiency and low emissions have granted proton exchange membrane (PEM) fuel cells the most promising future among all types of fuel cells. The porous electrodes of PEM fuel cells have a complicated, non-homogeneous, anisotropic microstructure. Therefore, pore-scale modeling techniques such as lattice Boltzmann method, which can capture non-homogeneous and anisotropic microstructures, haverecently gained a great attention. In the present study, a three-dimensional lattice Boltzmann model of a PEM fuel cell cathode electrode is proposed inwhich electrochemical reaction on the catalyst layer and microstructure of GDL are taken into account. The model enables us to simulate single-phase, multispecies reactive flow in a heterogeneous, anisotropic gas diffusion layer through an active approach. To show the capability of the proposed model, reactive flow in three reconstructed GDLs with different anisotropic characteristics is simulated to investigate the effects of GDL microstructure on species and current density distributions. The results demonstrate that when carbon fibers are more likely oriented normal to the catalyst layer, species density boundary layer is thicker and more disturbed. Current density also experiences a larger variation on the catalyst layer in such a case.

Keywords:

PEFC; lattice Boltzmann method; three-dimensional model; gas diffusion layer microstructure; electrochemical reaction

Paper COI Code

This Paper COI Code is ETEC03_335. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/305398/

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If you want to refer to this Paper in your research work, you can simply use the following phrase in the resources section:
Molaeimanesh, Gholam Reza and Akbari, Mohammad Hadi,1392,Three-dimensional simulation of the cathode in a polymer electrolyte fuel cell (PEFC) by lattice Boltzmann method,2014 Emerging Trends in Energy Conservation 3rd Conference - ETEC,Tehran,https://civilica.com/doc/305398

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  • Q.Zou, X. He, Phys. Fluids 9 (1997) 1591-1598. ...
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