To develop a proton-conducting ceramic fuel cell for organic hydrides and investigate direct power generation, it is first necessary to develop an air-anode electrode that remains highly active even at low temperatures. Therefore, we attempted to synthesize BaFeO₃ with a perovskite structure doped with praseodymium (Pr) using a sol-gel method involving nitric acid. To coat 3% Pr-doped BaFeO₃ as a cathode catalyst, we formulated a solution using α-terpineol, ethylene glycol, and 2-isopanol, and then applied it with a brush. We sintered the sample at 1000°C to fabricate a coin cell. Under standard conditions of 100 sccm H₂ and 200 sccm air, the open-circuit voltage was very high at 1.15 V at 600 °C. However, the resistance was high, making power generation difficult. To investigate the cause, EIS measurements revealed that the reaction resistance was approximately 10 times higher than that of LaSrCoFe coated onto the cathode via screen printing. Possible causes include an increase in the electrical resistance of the cathode itself and an increase in contact resistance at the interface between the cathode and the electrolyte. Moving forward, we will clarify the cause by performing structural analysis of the electrode catalyst using XRD and conducting cross-sectional observations of the test cell.