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

被引：47

作者：

Ismail, M. S. ^{[1
]}

Damjanovic, T. ^{[2
]}

Hughes, K. ^{[1
]}

Ingham, D. B. ^{[1
]}

Ma, L. ^{[1
]}

Pourkashanian, M. ^{[1
]}

Rosli, M. ^{[1
]}

机构：

[1] Univ Leeds, Ctr Computat Fluid Dynam, Leeds LS2 9JT, W Yorkshire, England

[2] SGL Technol GmbH, D-86405 Meitingen, Germany

来源：

JOURNAL OF FUEL CELL SCIENCE AND TECHNOLOGY | 2010年 / 7卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

PERFORMANCE; BACKING; INPLANE;

D O I：

10.1115/1.4000685

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

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. [DOI: 10.1115/1.4000685]

引用

页码：0510161 / 0510167

页数：7

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