On the effect of operating conditions in liquid-feed direct methanol fuel cells: A multiphysics modeling approach

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dc.contributor.author García-Salaberri, Pablo A.
dc.contributor.author Vera Coello, Marcos
dc.date.accessioned 2022-02-17T11:40:39Z
dc.date.available 2022-02-17T11:40:39Z
dc.date.issued 2016-10-15
dc.identifier.bibliographicCitation García-Salaberri, P. A. & Vera, M. (2016). On the effect of operating conditions in liquid-feed direct methanol fuel cells: A multiphysics modeling approach. Energy, 113, 1265–1287.
dc.identifier.issn 0360-5442
dc.identifier.uri http://hdl.handle.net/10016/34155
dc.description.abstract A multiphysics model for liquid-feed Direct Methanol Fuel Cells is presented. The model accounts for two-dimensional (2D) across-the-channel anisotropic mass and charge transport in the anode and cathode Gas Diffusion Layers (GDLs), including the effect of GDL assembly compression and electrical contact resistances at the Bipolar Plate (BPP) and membrane interfaces. A one-dimensional (1D) across-the-membrane model is used to describe local species diffusion through the microporous layers, methanol/water crossover, proton transport, and electrochemical reactions, thereby coupling both GDL sub-models. The 2D/1D model is extended to the third dimension and supplemented with 1D descriptions of the flow channels to yield a 3D/1D + 1D model that is successfully validated. A parametric study is then conducted on the 2D/1D model to examine the effect of operating conditions on cell performance. The results show that an optimum methanol concentration exists that maximizes power output due to the trade-off between anode polarization and cathode mixed overpotential. For fixed methanol concentration, cell performance is largely affected by the oxygen supply rate, cell temperature, and liquid/gas saturation levels. There is also an optimal GDL compression due to the trade-off between ohmic and concentration losses, which strongly depends on BPP material and, more weakly, on the actual operating conditions.
dc.description.sponsorship This work was supported by Projects ENE2011-24574 and ENE2015-68703-C2-1-R of the Spanish Ministerio de Economía y Competitividad.
dc.format.extent 23
dc.language.iso eng
dc.publisher Elsevier
dc.rights © 2016 Elsevier Ltd. All rights reserved.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.other DMFC
dc.subject.other Operating conditions
dc.subject.other Gdl compression
dc.subject.other Multiphysics modeling
dc.subject.other Parametric study
dc.title On the effect of operating conditions in liquid-feed direct methanol fuel cells: A multiphysics modeling approach
dc.type article
dc.subject.eciencia Ingeniería Mecánica
dc.identifier.doi https://doi.org/10.1016/j.energy.2016.07.074
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. ENE2011-24574
dc.relation.projectID Gobierno de España. ENE2015-68703-C2-1-R
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 1265
dc.identifier.publicationlastpage 1287
dc.identifier.publicationtitle Energy
dc.identifier.publicationvolume 113
dc.identifier.uxxi AR/0000018370
dc.contributor.funder Ministerio de Economía y Competitividad (España)
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