Effects of flow field design on the performance of a PEM fuel cell with metal foam as the flow distributor

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DOIResolve DOI: http://doi.org/10.1016/j.ijhydene.2012.05.008
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TypeArticle
Journal titleInternational Journal of Hydrogen Energy
ISSN0360-3199
Volume37
Issue17
Pages1306013066; # of pages: 7
SubjectProton exchange membrane fuel cell; Metal foam; Flow distributor; AC impedance
AbstractIn this work, we report the improvements made on the PEM fuel cell with metal foam as the flow distributor. The comparison in polarization curve is made between the PEM unit cell with different metal foam flow field designs and the PEM unit cell with graphite bipolar plate as flow distributor. The experimental results show that after using improved metal foam flow field designs, the fuel cell's performance increases. Our results show that, in the PEM unit cell with single zone metal foam, the convection is weak at side corners. Dividing the metal foam into multiple regions and using multiple inlets effectively improves gas distribution. AC impedance measurement was also performed to study impedance characteristics. The Nyquist and Bode plots confirmed that Ohmic resistance, activation resistance, and mass transfer resistance of metal foam fuel cell are all smaller than that of conventional PEM unit cell.
Publication date
LanguageEnglish
AffiliationEnergy, Mining and Environment; National Research Council Canada
Peer reviewedYes
IdentifierS0360319912011160
NPARC number21268767
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Record identifier4dfc1a07-b53f-476e-90df-b52d2f56f1f7
Record created2013-11-12
Record modified2016-05-09
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