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.
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October 2010
This article was originally published in
Journal of Fuel Cell Science and Technology
Research Papers
Through-Plane Permeability for Untreated and PTFE-Treated Gas Diffusion Layers in Proton Exchange Membrane Fuel Cells
M. S. Ismail,
M. S. Ismail
Centre for Computational Fluid Dynamics,
e-mail: pmmsai@leeds.ac.uk
University of Leeds
, Leeds, LS2 9JT, UK
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T. Damjanovic,
T. Damjanovic
SGL Technologies GmbH
, Meitingen 86405, Germany
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K. Hughes,
K. Hughes
Centre for Computational Fluid Dynamics,
University of Leeds
, Leeds, LS2 9JT, UK
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D. B. Ingham,
D. B. Ingham
Centre for Computational Fluid Dynamics,
University of Leeds
, Leeds, LS2 9JT, UK
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L. Ma,
L. Ma
Centre for Computational Fluid Dynamics,
University of Leeds
, Leeds, LS2 9JT, UK
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M. Pourkashanian,
M. Pourkashanian
Centre for Computational Fluid Dynamics,
University of Leeds
, Leeds, LS2 9JT, UK
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M. Rosli
M. Rosli
Centre for Computational Fluid Dynamics,
University of Leeds
, Leeds, LS2 9JT, UK
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M. S. Ismail
Centre for Computational Fluid Dynamics,
University of Leeds
, Leeds, LS2 9JT, UKe-mail: pmmsai@leeds.ac.uk
T. Damjanovic
SGL Technologies GmbH
, Meitingen 86405, Germany
K. Hughes
Centre for Computational Fluid Dynamics,
University of Leeds
, Leeds, LS2 9JT, UK
D. B. Ingham
Centre for Computational Fluid Dynamics,
University of Leeds
, Leeds, LS2 9JT, UK
L. Ma
Centre for Computational Fluid Dynamics,
University of Leeds
, Leeds, LS2 9JT, UK
M. Pourkashanian
Centre for Computational Fluid Dynamics,
University of Leeds
, Leeds, LS2 9JT, UK
M. Rosli
Centre for Computational Fluid Dynamics,
University of Leeds
, Leeds, LS2 9JT, UKJ. Fuel Cell Sci. Technol. Oct 2010, 7(5): 051016 (7 pages)
Published Online: July 20, 2010
Article history
Received:
July 17, 2009
Revised:
August 1, 2009
Online:
July 20, 2010
Published:
July 20, 2010
Citation
Ismail, M. S., Damjanovic, T., Hughes, K., Ingham, D. B., Ma, L., Pourkashanian, M., and Rosli, M. (July 20, 2010). "Through-Plane Permeability for Untreated and PTFE-Treated Gas Diffusion Layers in Proton Exchange Membrane Fuel Cells." ASME. J. Fuel Cell Sci. Technol. October 2010; 7(5): 051016. https://doi.org/10.1115/1.4000685
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