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GDL (Gas diffusion layer) intrusion into gas feeding channels narrows the effective channel cross-sectional area and eventually results in performance degradation of PEFCs (polymer electrolyte fuel cells). Therefore, cross-sectional channel design of metallic bipolar plates should be optimized to resolve this problem. In this study, effects of the cross-sectional configuration of metallic gas channels...
Comprehensive analytical and numerical analyses were performed, focusing on anode water loss, cathode flooding, and water equilibrium for polymer electrolyte fuel cells. General features of water transport as a function of membrane thickness and current density were presented to illustrate the net effect of back-diffusion of water from the cathode to anode over a polymer electrolyte fuel cell domain...
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