A Mathematical Model of Ultrathin Catalyst Layers in PEFCs

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DOIResolve DOI: http://doi.org/10.4028/www.scientific.net/MSF.539-543.1397
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TypeArticle
Journal titleMaterials Science Forum
Volume539 - 543
Pages13971402; # of pages: 6
SubjectCatalyst Layer; Fuel Cell Modeling; Poisson-Nernst-Planck Theory; Proton Exchange Membrane Fuel Cell; Pt Utilization
AbstractA mathematical model for an ultra-thin catalyst layer in PEFCs is introduced. It utilizes Nernst-Planck and Poisson equations. Calculated polarization curves are shown to compare favourably with published experimental data for ultra-thin catalyst layers. Aspects of current conversion, reactant, current distribution, and catalyst utilization are explored. The effect of catalyst layers thickness on the Pt utilization is discussed. This study gives us a better understanding of transport and reaction at the mesoscopic scale and it furnishes the directions for optimization of this type of catalyst layer.
Publication date
AffiliationNational Research Council Canada; NRC Institute for Fuel Cell Innovation
Peer reviewedNo
NPARC number8901226
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Record identifier39f65320-8ff5-4ef5-bad8-1cd7717cafc8
Record created2009-04-22
Record modified2016-05-09
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