Modeling gas diffusion layers in polymer electrolyte fuel cells using a continuum-based pore-network formulation

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Show simple item record García-Salaberri, Pablo A. Zanyuk, Iryna V. Gostick, Jeff T. Weber, Adam Z. 2022-10-20T08:55:28Z 2022-10-20T08:55:28Z 2021-07-10
dc.identifier.bibliographicCitation García-Salaberri, P. A., Zenyuk, I. V., Gostick, J. T. & Weber, A. Z. (2020, 25 junio). Modeling Gas Diffusion Layers in Polymer Electrolyte Fuel Cells Using a Continuum-Based Pore-Network Formulation. ECS Transactions, 97(7), 615-626.
dc.identifier.issn 1938-5862
dc.description.abstract Multiscale modeling of porous media in polymer electrolyte fuel cells is of paramount importance to improve predictions and assist the design of new materials. In this work, a composite-continuum-network formulation is presented to model species diffusion and convection in gas diffusion layers (GDLs). The model can be incorporated into CFD codes with moderate computational cost. The macroscopic model is based on a structured mesh composed of parallelepiped control volumes (CVs) and differential connectors (with negligible volume). The CV mesh embeds an internal structured pore network, which is used to determine analytically local anisotropic effective transport properties (effective diffusivity and permeability). The global structural parameters and effective transport properties predicted by the model are in good agreement with previous experimental data. Moreover, the results show that heterogeneities in the GDL can have significant influence on the fluxes from/to the catalyst layer, thus affecting local degradation rates.
dc.description.sponsorship The model was conceived and partially developed during the stay of P.A. García-Salaberri at LBNL, which was supported by the US-Spain Fulbright commission. P.A. GarcíaSalaberri also thanks the support of the project for young researchers PEM4ENERGYCMUC3M (Universidad Carlos III de Madrid).
dc.format.extent 12
dc.language.iso eng
dc.publisher IOP Publising
dc.rights © 2020 ECS - The Electrochemical Society
dc.title Modeling gas diffusion layers in polymer electrolyte fuel cells using a continuum-based pore-network formulation
dc.type article
dc.subject.eciencia Materiales
dc.rights.accessRights openAccess
dc.relation.projectID Universidad Carlos III de Madrid. PEM4ENERGYCMUC3M
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 7
dc.identifier.publicationlastpage 12
dc.identifier.publicationtitle ECS Transactions (ECS Transactions)
dc.identifier.publicationvolume 97
dc.identifier.uxxi AR/0000030742
dc.affiliation.dpto UC3M. Departamento de Ingeniería Térmica y de Fluidos
dc.affiliation.grupoinv UC3M. Grupo de Investigación: Mecánica de Fluidos
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