NDLI: A numerical study on the performance of polymer electrolyte membrane fuel cells due to the variation in gas diffusion layer permeability

Content Provider	Springer Nature Link
Author	Baek, Seung Man Koh, Soo Gon Kim, Kwang Nam Kang, Jung Ho Nam, Jin Hyun Kim, Charn Jung
Copyright Year	2011
Abstract	Convective flow in the under-rib regions of gas diffusion layers (GDLs) is a non-negligible transport process that can enhance the performance of polymer electrolyte membrane fuel cells (PEMFCs) by facilitating efficient utilization of catalyst layers (CLs) in those regions. The permeability of GDLs has been recognized as a dominant factor influencing the intensity of the under-rib convection in PEMFCs. In this study, the correlation between the permeability of GDLs and the performance of PEMFCs was numerically investigated through a detailed simulation of the transport and electrochemical processes in PEMFCs using a computational fluid dynamics (CFD) tool. Three serpentine flow fields with one, three, or five parallel paths were considered as reactant flow channels for an active cell area of 3 cm × 3 cm, while the permeability of GDLs was varied from 1×10$^{−12}$ m$^{2}$ to 1×10$^{−10}$ m$^{2}$. The effects of the flow field design and the GDL permeability on the performance of PEMFCs were presented, along with their impacts on the local distribution of current density, water content, and reactant concentration.
Starting Page	457
Ending Page	467
Page Count	11
File Format	PDF
ISSN	1738494X
Journal	Journal of Mechanical Science and Technology
Volume Number	25
Issue Number	2
e-ISSN	19763824
Language	English
Publisher	Korean Society of Mechanical Engineers
Publisher Date	2011-03-19
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polymer electrolyte membrane fuel cell Gas diffusion layer Permeability Under-rib convection Mechanical Engineering Vibration, Dynamical Systems, Control Industrial and Production Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering

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