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Enhanced Diffusion in Polymer Electrolyte Membrane Fuel Cell Using Pulsating Flow
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DOI：10.1149/1.2981977.png)
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Abstract
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This study considers the feasibility of the concentration control of the fuel and vapor by oscillating flow in the channel of Polymer Electrolyte Membrane Fuel Cells(PEMFCs). PEMFC Stack performance is largely influenced by the fuel and vapor concentration. If the fuel concentration is lower than stoichiometry 1.25 of the hydrogen and 2.5 of the air or the flooding is happened by excess water, its performance deteriorates seriously because of the fuel and air starvation. In this respect the optimization of the fuel and vapor concentration is crucially important to maximize fuel cell stack performance. The objective of the current study is to apply the principle of the mass transfer being enhanced by the oscillating flow to the cathode channel.
Keywords:
MASS-TRANSFER ENHANCEMENT
CATHODE
OXYGENATOR
MANAGEMENT
TRANSPORT
CHANNELS
DESIGN
MODEL
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