Through-plane permeability for untreated and PTFE-treated gas diffusion layers in proton exchange membrane fuel cells

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

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. Copyright © 2010 by ASME.

Citation

Ismail, M. S., Damjanovic, T., Hughes, K., Ingham, D. B., Ma, L., Pourkashanian, M., & Rosli, M. (2010). Through-plane permeability for untreated and PTFE-treated gas diffusion layers in proton exchange membrane fuel cells. Journal of Electrochemical Energy Conversion and Storage, 7(5), Article 051016. https://doi.org/10.1115/1.4000685

• Journal Article Type: Article
• Online Publication Date: Jul 20, 2010
• Publication Date: Oct 1, 2010
• Deposit Date: Jan 21, 2023
• Journal: Journal of Electrochemical Energy Conversion and Storage
• Print ISSN: 2381-6872
• Electronic ISSN: 2381-6910
• Publisher: American Society of Mechanical Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 7
• Issue: 5
• Article Number: 051016
• DOI: https://doi.org/10.1115/1.4000685
• Keywords: Permeability; Proton exchange membrane fuel cells
• Public URL: https://hull-repository.worktribe.com/output/4186140