NDLI: Evaluating breakthrough pressure in gas diffusion layers of proton exchange membrane fuel cells

Content Provider	Springer Nature Link
Author	Ma, Yue Li, Jia Zhang, Zhuqian Wang, Xia
Copyright Year	2010
Abstract	This paper studied the breakthrough pressure for liquid water to penetrate the gas diffusion layer (GDL) of a proton exchange membrane fuel cell (PEMFC). An ex-situ testing was conducted on a transparent test cell to visualize the water droplet formation and detachment on the surface of different types of GDLs through a CCD camera. The breakthrough pressure, at which the liquid water penetrates the GDL and starts to form a droplet, was measured. The breakthrough pressure was found to be different for the GDLs with different porosities and thicknesses. The equilibrium pressure, which is defined as the minimum pressure required maintaining a constant flow through the GDL, was also recorded. The equilibrium pressure was found to be much lower than the breakthrough pressure for the same type of GDL. A pore network model was modified to further study the relationship between the breakthrough pressure and the GDL properties and thicknesses. The breakthrough pressure increases for the thick GDL with smaller micro-pore size.
Starting Page	459
Ending Page	464
Page Count	6
File Format	PDF
ISSN	10032169
Journal	Journal of Thermal Science
Volume Number	19
Issue Number	5
e-ISSN	1993033X
Language	English
Publisher	SP Science Press
Publisher Date	2010-08-28
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	PEMFC Gas diffusion layer Visualization Network model Engineering Thermodynamics, Heat and Mass Transfer Engineering Fluid Dynamics Classical Continuum Physics
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics

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