6533b7d2fe1ef96bd125f7a7
RESEARCH PRODUCT
Strontium and iron-doped barium cobaltite prepared by solution combustion synthesis: exploring a mixed-fuel approach for tailored intermediate temperature solid oxide fuel cell cathode materials
Giuseppe MarcìEnrico TraversaEmiliana FabbriEmiliana FabbriLeonarda F. LiottaFrancesca Deganellosubject
Materials scienceCathode materialsInorganic chemistrychemistry.chemical_elementBSCFCombustionlaw.inventionchemistry.chemical_compoundOxidation statelawPhase (matter)Materials ChemistryChatode materialIntermediate temperature solid oxide fuel cellsStrontiumRenewable Energy Sustainability and the EnvironmentPerovskite-type materialsBariumPerovskite-type compoundsCombustion fuel mixtureCathodeElectronic Optical and Magnetic MaterialsCobaltiteFuel TechnologychemistrySolution combustion synthesisSolid oxide fuel cellSettore CHIM/07 - Fondamenti Chimici Delle Tecnologiedescription
Ba0.5Sr0.5Co0.8Fe0.2O3-? (BSCF) powders were prepared by solution combustion synthesis using single and double fuels. The effect of the fuel mixture on the main properties of this well-known solid oxide fuel cell cathode material with high oxygen ion and electronic conduction was investigated in detail. Results showed that the fuel mixture significantly affected the area-specific resistance of the BSCF cathode materials, by controlling the oxygen deficiency and stabilizing the Co2+ oxidation state. It was demonstrated that high fuel-to-metal cations molar ratios and high reducing power of the combustion fuel mixture are mainly responsible for the decreasing of the area-specific resistance of BSCF cathode materials. Moreover, a new metastable monoclinic phase with Ba0.5Sr0.5CO3 composition was discovered in the as-burned BSCF powders, enlarging the existing information on the BSCF phase formation mechanism.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-01-29 | Materials for Renewable and Sustainable Energy |