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

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

Eric A. Wargo, Volker P. Schulz, Ahmet Cecen, Surya R. Kalidindi and Emin Caglan Kumbur
ECS transactions, v 50(2), pp 513-519
15 Mar 2013

Abstract

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.

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