The development of high performance electrocatalysts to promote oxygen reduction reaction (ORR) and to prolong the durability of cathodes of solid oxide fuel cell is essential at intermediate or low temperatures. Here, we report a facile and efficient spray impregnation strategy in enhancing catalytic activity of La0.6Sr0.4Co0.8Fe0.2O3-delta (LSCF) due to the introduction of a multitude of homogeneous nanoparticles. With a highly active surface abundance in B-site cations, the modified LSCF cathode manifests an area-specific resistance (ASR) of similar to 0.140 Omega cm(2), only a fifth of that for a pristine LSCF cathode (similar to 0.764 Omega cm(2)) at 600 degrees C, and anode-supported fuel cells with the decorated LSCF cathode show markedly improved peak power densities (similar to 0.94 W cm(-2) at 700 degrees C). Furthermore, the ORR kinetics of the modified LSCF cathode can be further enhanced by impregnating Ni(NO3)(2)center dot 6H(2)O and Co(NO3)(2)center dot 6H(2)O solution again. X-ray photoelectron spectroscopy analysis indicates that the homogeneous nanoparticles alter the distribution of Sr-surface and O-surface. It is found that 'Co' decoration can effectively alleviate the surface aggregation of Sr and 'Co' and 'Ni' decoration play a pivotal role in the reactivation of electrode surface. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.