Preparation and performance of La1−xSrxCuO3−δ as cathode material in IT-SOFCs

The cathode material La1−xSrxCuO3−δ (x = 0.15, 0.2, 0.3, 0.4) was synthesized by a sol-gel method. X-ray diffraction revealed it to form a single phase of perovskite. The investigation of the electrical properties suggested that La0.7Sr0.3CuO3−δ has the highest electrical conductivity. La0.7Sr0.3CuO3−δ has better electrochemical properties than La0.6Sr0.4CoO3−δ. When using La0.7Sr0.3CuO3−δ as cathode based on SDC electrolyte one can obtain higher current density and power density at intermediate temperatures.