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A two-phase non-isothermal PEFC model: Theory and validation
KTH, Tidigare Institutioner (före 2005), Mekanik. (Faxén Laboratoriet)
KTH, Tidigare Institutioner (före 2005), Kemiteknik. (Tillämpad elektrokemi)
KTH, Tidigare Institutioner (före 2005), Mekanik. (Faxén Laboratoriet)ORCID-id: 0000-0002-8318-1251
Vise andre og tillknytning
2004 (engelsk)Inngår i: Fuel Cells, ISSN 1615-6846, E-ISSN 1615-6854, Vol. 4, nr 4, s. 365-377Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A two-dimensional, non-isothermal, two-phase model of a polymer electrolyte fuel cell (PEFC) is presented. The model is developed for conditions where variations in the stream-wise direction are negligible. In addition, experiments were conducted with a segmented cell comprised of net flow fields. The, experimentally obtained, current distributions were used to validate the PEFC model developed. The PEFC model includes species transport and the phase change of water, coupled with conservation of momentum and mass, in the porous backing of the cathode, and conservation of charge and heat throughout the fuel cell. The current density in the active layer at the cathode is modelled with an agglomerate model, and the contact resistance for heat transfer over the material boundaries is taken into account. Good agreement was obtained between the modelled and experimental polarization curves. A temperature difference of 6°C between the bipolar plate and active layer on the cathode, and a liquid saturation of 6% at the active layer in the cathode were observed at 1 A cm-2.

sted, utgiver, år, opplag, sider
2004. Vol. 4, nr 4, s. 365-377
Emneord [en]
Current Distribution Measurement, Numerical Simulation, PEFC, Two-Phase Transport, Water Management
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Identifikatorer
URN: urn:nbn:se:kth:diva-80615DOI: 10.1002/fuce.200400048ISI: 000208115800017Scopus ID: 2-s2.0-11844253802OAI: oai:DiVA.org:kth-80615DiVA, id: diva2:496837
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QC 20120307Tilgjengelig fra: 2012-02-10 Laget: 2012-02-10 Sist oppdatert: 2022-06-24bibliografisk kontrollert

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Vynnycky, MichaelLindbergh, Göran

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