La<sub>1</sub> <sub>.7</sub>Ca<sub>0.3</sub>Ni<sub>0.75</sub>Cu<sub>0.25</sub>O<sub>4-δ</sub>-layered perovskite as cathode on La<sub>0.9</sub>Sr<sub>0.1</sub>Ga<sub>0.8</sub>Mg<sub>0.2</sub>O<sub>3</sub> or Ce<sub>0.8</sub>Gd<sub>0.2</sub>O<sub>2</sub> electrolyte for intermediate temperature solid oxide fuel cells - Fingerprint