Electrochemical investigation of oxygen reduction reaction on La0.6Sr0.4Co0.2Fe0.8O3−δ cathodes deposited by Electrostatic Spray Deposition

► Study of oxygen reduction reaction of LSCF cathodes for IT-SOFCs. ► Analysis of impedance response between 450 and 600 °C and 10−410−2atm. ► Dissociative adsorption and gas-phase diffusion co-limiting for pO2<10−2atm. ► LSCF cathodes maintain performance levels at pO2 as low as 10−2 atm.