Microstructure-Driven Analysis of Two-Phase Transport in Diffusion Media of PEFCs

The objective of this work is to evaluate the multiphase transport characteristics of diffusion media (DM) of polymer electrolyte fuel cells (PEFCs) using advanced microstructure quantification and pore-scale modeling techniques. The microstructure of a gas diffusion layer (GDL) sample is characteri...

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Bibliographic Details
Published in:ECS transactions 2013-03, Vol.50 (2), p.513-519
Main Authors: Wargo, Eric A., Schulz, Volker P., Cecen, Ahmet, Kalidindi, Surya R., Kumbur, Emin Caglan
Format: Article
Language:English
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Summary:The objective of this work is to evaluate the multiphase transport characteristics of diffusion media (DM) of polymer electrolyte fuel cells (PEFCs) using advanced microstructure quantification and pore-scale modeling techniques. The microstructure of a gas diffusion layer (GDL) sample is characterized using micro x-ray computed tomography. The microstructure dataset is analyzed using in-house structural analysis tools and a full pore morphology model to determine the water imbibition characteristics and key measures of structure, including the porosity, pore (void) connectivity, tortuosity, and capillary pressure-saturation curves.
ISSN:1938-5862
1938-6737
DOI:10.1149/05002.0513ecst