| Issue |
Korean Journal of Chemical Engineering,
Vol.31, No.8, 1384-1388, 2014
Vol.31, No.8, 1384-1388, 2014
Effect of membrane-electrode-assembly configuration on proton exchange membrane fuel cell performance
Four different membrane-electrode-assemblies (MEAs) with single and dual-layer gas diffusion layers (GDLs) at the anode and the cathode were prepared to examine polarization characteristics that rely on MEA configuration. Porous structure of single and dual-layer GDLs was investigated using a mercury porosimeter. An MEA with dual-layer GDLs at each electrode demonstrated higher performance with an air feed. To comprehend the improvement, the impedance behavior at various current densities and polarization behavior under back pressure were analyzed in terms of oxygen diffusion processes that control catalyst utilization in the gas diffusion electrode.
Keywords:
Proton Exchange Membrane Fuel Cells; MEA Configuration; Gas Diffusion Layer; Microporous Layer; Water Management
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