LiFeO2-LiCoO2-NiO materials for Molten Carbonate Fuel Cell cathodes. Part I: Powder synthesis and material characterization
2006 (English)In: Solid State Ionics, ISSN 0167-2738, E-ISSN 1872-7689, Vol. 177, no 1-2, 165-173 p.Article in journal (Refereed) Published
Ternary compositions of LiFeO2LiCoO2 and NiO are expected to posses desirable characteristics for the Molten Carbonate Fuel Cell (MCFC) cathode application. This paper presents a detailed description of the synthesis of LiFeO2-LiCoO2-NiO powders as well as dense sintered materials together with a brief discussion on the common aspects and trends observed in the characterization of these materials for MCFC cathode application. Feasibility of two wet-chemical powder preparation techniques, the Pechini method and the glycine-nitrate method, was investigated to obtain powders with characteristics appropriate for cathode fabrication. Materials in the LiFeO2-NiO binary system and five ternary subsystems, each with a constant molar ratio of LiFeO2/NiO while varying LiCoO2 content, were studied. Powders with characteristics appropriate for MCFC cathode fabrication could be obtained by the Pechini method. The particle size of LiFeO2-LiCoO2-NiO powders considerably depends on the calcination temperature and the material composition. The electrical conductivity study reveals the ability of preparing LiFeO2-LiCoO2-NiO materials with adequate electrical conductivity for MCFC cathode application.
Place, publisher, year, edition, pages
2006. Vol. 177, no 1-2, 165-173 p.
powder synthesis, electrical conductivity, fuel cells, MCFC, LiFeO2-LiCoO2-NiO ternary compositions, licoo2 cathodes, performance, precursors
IdentifiersURN: urn:nbn:se:kth:diva-15392DOI: 10.1016/j.ssi.2005.10.018ISI: 000234926200023ScopusID: 2-s2.0-29244468292OAI: oai:DiVA.org:kth-15392DiVA: diva2:333433
QC 201005252010-08-052010-08-05Bibliographically approved