Effect of Fe Doping on Layered Perovskite Oxides As Cathode Materials for Intermediate-Temperature Solid Oxide Fuel Cells

Layered perovskite oxides have been proposed as cathode materials for solid oxide fuel cells (SOFCs) at intermediate-temperature owing to their fast oxygen ion diffusion and high catalytic activity for the oxygen reduction reaction (ORR). This study focuses on the effects of Fe doping on Co site in layered perovskite oxides  in the aspects of the structural characteristics, electrical properties, redox properties, oxygen kinetics, and electrochemical performance as an IT-SOFC cathode material. Fe doped layered perovskite oxides enhance redox stability and oxygen kinetics, and also shows satisfactory results of electrical properties and electrochemical performances under typical fuel cell operating conditions.