Experimental Investigation of the Porous Nickel Anode in the Molten Carbonate Fuel Cell
2001 (English)In: Journal of the Electrochemical Society, ISSN 0013-4651, Vol. 148, no 5, A411-A417 p.Article in journal (Refereed) Published
The electrochemical performance of the porous nickel anode in a molten carbonate fuel cell was experimentally investigated in this study. The electrode structure was studied by scanning electron microscope and Hg porosimetry. The effect of electrolyte filling, on overpotential at a constant current density, was also examined. Kinetics for the hydrogen reaction was studied by obtaining stationary polarization curves, for porous nickel anodes at varying temperatures and anode gas compositions. The slopes of these polarization curves were analyzed at low overpotentials, with the assumption that the porous anode was under kinetic control, and the corresponding exchange current densities were determined using a simplified porous electrode model. The obtained partial pressure dependencies of the exchange current density were high, and therefore, difficult to explain by the generally assumed mechanisms.
Place, publisher, year, edition, pages
2001. Vol. 148, no 5, A411-A417 p.
hydrogen oxidation, electrode-kinetics, li/k carbonate, polarization, model, mechanism, impedance, cathodes, oxidant
IdentifiersURN: urn:nbn:se:kth:diva-5354DOI: 10.1149/1.1359195ISI: 000168421200003OAI: oai:DiVA.org:kth-5354DiVA: diva2:9582
QC 201010082005-08-052005-08-052010-10-08Bibliographically approved