Structural and electrical characterization of the novel SrCo1-xTixO3– (x = 0.05, 0.1 and 0.15) perovskites: Evaluation as cathode materials in solid oxide fuel cells

The SrCoO3-δ perovskite system is able to incorporate Ti at the Co positions, stabilizing a tetragonal perovskite superstructure that combines excellent electronic and ionic conductivity. These materials outperform as cathodes in solid-oxide fuel cells (SOFC). An in situ neutron powder diffraction (NPD) study of SrCo0.95Ti0.05O3−δ between 200 and 800 °C (working conditions of a SOFC) allowed us to analyze the crystal structure and correlate it...