Big obstacles for the common availability of solid oxide fuel cells (SOFCs) are the electrochemical performance and durability of cathode materials. Here, we introduce an A-site deficient lanthanum-ferrite (La0.55Sr0.35Co0.2Fe0.8O3) and ceria (Ce0.8Sm0.15Nd0.05O2) composite cathode being content with those criteria. At 700 degrees C, the polarization resistivity of the cathode on zirconia with a ceria buffer layer is 0.03 Omega km(2), which delivers a high power output of similar to 1.16 W/cm(2) in the single cell with zirconia solid electrolyte. The polarization resistivity exhibits stable performance for 300 h. (C) 2013 Elsevier B.V. All rights reserved.