Detailed impedance characterization of a well performing and durable Ni:CGO infiltrated cermet anode for metal-supported solid oxide fuel cells

► Impedance of the infiltrated cermet anode was described by Porous Electrode Theory. ► The characteristic electrochemical utilization thickness was estimated. ► CGO self-limiting growth and Ni fixation in CGO matrix stabilize the infiltration. ► The impact of corrosion on the impedance was studied.