LaCoO3-delta (LC)-coated Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) cathode is fabricated by the solution impregnation method and promoted electrochemical performance is obtained. After being coated by LC shell, the polarization resistance can be as low as 0.197 Omega cm(2) and the peak power density is 0.243 W cm(-2) at the operating temperature of 600 degrees C. The excellent CO2 resistance of LC-coated BSCF cathode is verified by the CO2-poisoning test. Even in the operating atmosphere with high CO2 concentration, the polarization resistance change of LC-coated BSCF cathode is much smaller than that of the blank BSCF cathode. By long-term test of single cells, the remarkable electrochemical performance stability of LC-coated BSCF cathode is shown. The promoted electrochemical performance, excellent CO2 resistance and remarkable long-term stability make LC-coated BSCF cathode promising for intermediate temperature solid oxide fuel cells. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.