Cobalt-free perovskite Ba0.95La0.05FeO3-delta (BLF) was synthesized. The conductivity of BLF was measured with a DC four-point technique. The thermal expansion coefficient of the BLF was measured using a dilatometer. The BaZr0.1Ce0.7Y0.2O3-delta (BZCY7) electrolyte based proton conducting solid oxide fuel cells (SOFCs) were fabricated. A composite cathode with BLF+BZCY7 was used to mitigate the thermal expansion mismatch with the BZCY7 electrolyte. The polarization processes of the button cell NiO-BZCY7/BZCY7/BLF+BZCY7 were characterized using the complicated electrochemical impedance spectroscopy technique. The open circuit voltage of 0.982 V. 1.004 V, and 1.027 V was obtained at 700 degrees C, 650 degrees C, and 600 degrees C, respectively, while the peak power density of 325 mW cm(-2), 240 mW cm(-2), and 152 mW cm(-2), was achieved accordingly. Published by Elsevier B.V.