Current distribution measurements in a PEFC with net flow geometry
2004 (English)In: Journal of Applied Electrochemistry, ISSN 0021-891X, E-ISSN 1572-8838, Vol. 34, no 3, 255-262 p.Article in journal (Refereed) Published
A measurement system for current distribution mapping for a PEFC has been developed. The segmented anode is constructed so as to have high thermal conductivity in order to prevent the formation of large temperature gradients between the electrodes. The construction is therefore feasible for use at high current densities. Both segmented and unsegmented gas diffusion layers are used. The effect of inlet humidification and gas composition at the cathode side is studied. In addition, two different flow geometries are studied. The results show that the measurement system is able to distinguish between current distribution originating from differences in proton conductivity, species concentration and gas diffusion layer properties.
Place, publisher, year, edition, pages
2004. Vol. 34, no 3, 255-262 p.
current distribution, net flow geometry, PEFC, segmented current collector, membrane-electrode assemblies, methanol fuel-cell, gas-evolving cell, water transport, mass-transfer, pemfc, behavior, channel
IdentifiersURN: urn:nbn:se:kth:diva-23162DOI: 10.1023/B:JACH.0000015616.92074.5dISI: 000188875900002ScopusID: 2-s2.0-1542471538OAI: oai:DiVA.org:kth-23162DiVA: diva2:341860
QC 20100525 QC 201111012010-08-102010-08-102011-11-01Bibliographically approved