Unveiling critical role of metal oxide infiltration in controlling the surface oxygen exchange activity and polarization of SrTi1−xFexO3−δ perovskite oxide electrodes

Surface oxygen exchange coefficients, k chem , of SrTi 1− x / 100 Fe x /100 O 3− δ ( x = 35, 50, 80) before and after CaO-activation and Al 2 O 3 -deactivation at 575 °C.