Effects of clamping pressure and contact resistance on the performance of PEMFC with interdigitated flow field
Date Issued
2008
Date
2008
Author(s)
Jen, Po-Chuan
Abstract
In this study, a two dimensional model built by Comsol-Multiphysics is used. It is applied to analyze gas diffusion layer of proton exchange membrane fuel cell. The theory includes large deformation theory, fluid field, species transport, and electrochemical reaction. The porosity, velocity, oxygen, and water vapor distribution in gas diffusion layer can be calculated with different clamping pressure. The results show that high clamping pressure will decrease the transport resistance, but low clamping pressure will increase the contact resistance between gas diffusion layer and bipolar plate. Therefore, clamping pressure needs to be considered in cell design.
Subjects
proton exchange membrane fuel cell
gas diffusion layer
clamping pressure
contact resistance
transport resistance
Type
thesis
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ntu-97-R95543048-1.pdf
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