Interfacial modification of La0.80Sr0.20MnO3−δ-Er0.4Bi0.6O3 cathodes for high performance lower temperature solid oxide fuel cells

▸ Using a highly conductive ESB, the LSM cathode/electrolyte interface is functionally modified. ▸ Cathodic polarization with an ESB layer is reduced by 60% due to enhanced oxygen incorporation. ▸ The maximum power density of a SOFC using this modification is over 1 W cm−2 at 650 °C. ▸ The SOFC shows a stable performance for ∼200 h.