%0 Journal Article
%T 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
%A Francesca Deganello
%A Leonarda F. Liotta
%A Giuseppe Marc¨¬
%A Emiliana Fabbri
%A Enrico Traversa
%J Materials for Renewable and Sustainable Energy
%@ 2194-1467
%D 2013
%I 
%R 10.1007/s40243-013-0008-z
%X Ba0.5Sr0.5Co0.8Fe0.2O3¨C¦Ä (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.
%K Solution combustion synthesis
%K Intermediate temperature solid oxide fuel cells
%K Cathode materials
%K Combustion fuel mixture
%K BSCF
%K Perovskite-type compounds
%U http://link.springer.com/article/10.1007/s40243-013-0008-z