Channel-to-rib width ratio effects of flowfield plates in the performance of a micro-PEM fuel cell stack

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Effect of channel-to-rib width ratio of flowfield plates on micro proton exchange membrane fuel cell stacks performance test (VI/PI) was studied experimentally in the present study (see Fig. 1). The channel-to-rib width ratio was varied from 0.5 to 2. The optimum channel-to-rib width ratio of flowfield plates for micro PEM fuel cell stack was found. Moreover, the pressure drop in flowfield on both anode and cathode was measured and, with aid of pressure drop obtained for H2/air delivery, an optimal channel-to-rib width ratio in terms of the net stack power gain factor (= stack power gain/stack power consumption) of 0.67 can be also obtained for the present study.

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Journal: TechConnect Briefs
Volume: 3, Nanotechnology 2009: Biofuels, Renewable Energy, Coatings, Fluidics and Compact Modeling
Published: May 3, 2009
Pages: 103 - 106
Industry sector: Energy & Sustainability
Topic: Energy Storage
ISBN: 978-1-4398-1784-1