Through-Plane Permeability for Untreated and PTFE-Treated Gas Diffusion Layers in Proton Exchange Membrane Fuel Cells-Reference-Cited by-同舟云学术

Through-Plane Permeability for Untreated and PTFE-Treated Gas Diffusion Layers in Proton Exchange Membrane Fuel Cells

Published:2010-07-20 Issue:5 Volume:7 Page:
ISSN:1550-624X
Container-title:Journal of Fuel Cell Science and Technology
language:en
Short-container-title:

Author:

Ismail M. S.¹,Damjanovic T.²,Hughes K.¹,Ingham D. B.¹,Ma L.¹,Pourkashanian M.¹,Rosli M.¹

Affiliation:

1. Centre for Computational Fluid Dynamics, University of Leeds, Leeds, LS2 9JT, UK

2. SGL Technologies GmbH, Meitingen 86405, Germany

Abstract

The through-plane permeability has been experimentally measured for untreated and polytetrafluoroethylene-treated (PTFE-treated) gas diffusion layers (GDLs), as used in proton exchange membrane fuel cells. Contrary to what the literature has previously shown, the results suggest that there exists an optimum value for the wet-proofing agent, PTFE, at which the though-plane permeability of the GDL is a maximum. The analysis that is undertaken to investigate the effect of the air compressibility shows that there is an underestimation in the through-plane permeability of the tested GDLs by of the order of 9% if the density of the air is assumed to be constant. Also, a nondimensionalisation analysis shows that ignoring the non-Darcy effects at the maximum reported flow rates result in negligible errors for the untreated and treated GDLs.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials

Link

http://asmedigitalcollection.asme.org/electrochemical/article-pdf/doi/10.1115/1.4000685/5897072/051016_1.pdf

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