This study focuses on cathode performances of (, Nd, Sm, and Gd, , 0.3, 0.5, 0.7, and 1) for intermediate temperature-operating solid oxide fuel cells (IT-SOFCs, ). powders as cathode materials for IT-SOFC, which can be operated between and were synthesized by the glycine-nitrate-process (GNP) method. The impedance spectroscopy method was used to investigate area specific resistance (ASR) and electrochemical properties of (, Nd, Sm, and Gd, , 0.3, 0.5, 0.7, and 1). and showed to of ASR at and to at . showed the lowest ASR values of on 10% Gd-doped cerium oxide at .