Through-Plane Permeability for Untreated and PTFE-Treated Gas Diffusion Layers in Proton Exchange Membrane Fuel CellsSource: Journal of Fuel Cell Science and Technology:;2010:;volume( 007 ):;issue: 005::page 51016Author:M. S. Ismail
,
T. Damjanovic
,
K. Hughes
,
D. B. Ingham
,
L. Ma
,
M. Pourkashanian
,
M. Rosli
DOI: 10.1115/1.4000685Publisher: The American Society of Mechanical Engineers (ASME)
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.
keyword(s): Permeability , Gas diffusion layers , Carbon , Flow (Dynamics) , Compressibility AND Proton exchange membrane fuel cells ,
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| contributor author | M. S. Ismail | |
| contributor author | T. Damjanovic | |
| contributor author | K. Hughes | |
| contributor author | D. B. Ingham | |
| contributor author | L. Ma | |
| contributor author | M. Pourkashanian | |
| contributor author | M. Rosli | |
| date accessioned | 2017-05-09T00:38:26Z | |
| date available | 2017-05-09T00:38:26Z | |
| date copyright | October, 2010 | |
| date issued | 2010 | |
| identifier issn | 2381-6872 | |
| identifier other | JFCSAU-28944#051016_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/143595 | |
| description 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 | The American Society of Mechanical Engineers (ASME) | |
| title | Through-Plane Permeability for Untreated and PTFE-Treated Gas Diffusion Layers in Proton Exchange Membrane Fuel Cells | |
| type | Journal Paper | |
| journal volume | 7 | |
| journal issue | 5 | |
| journal title | Journal of Fuel Cell Science and Technology | |
| identifier doi | 10.1115/1.4000685 | |
| journal fristpage | 51016 | |
| identifier eissn | 2381-6910 | |
| keywords | Permeability | |
| keywords | Gas diffusion layers | |
| keywords | Carbon | |
| keywords | Flow (Dynamics) | |
| keywords | Compressibility AND Proton exchange membrane fuel cells | |
| tree | Journal of Fuel Cell Science and Technology:;2010:;volume( 007 ):;issue: 005 | |
| contenttype | Fulltext |