Cathode materials consisting of Pr1-xSrxCo0.8Fe0.2O3-delta (x = 0.2-0.6) were prepared by the sol-gel process for intermediate-temperature solid oxide fuel cells (IT-SOFCs). The samples had an orthorhombic perovskite structure. The electrical conductivities were all higher than 279 S cm(-1). The highest conductivity, 1040 S cm(-1), was found at 300 degrees C for the composition x = 0.4. Symmetrical cathodes made of Pr0.6Sr0.4Co0.8Fe0.2O3-delta (PSCF)-Ce0.85Gd0.15O1.925 (50:50 by weight) composite powders were screen-printed on GDC electrolyte pellets. The area specific resistance value for the PSCF-GDC cathode was as low as 0.046 Omega cm(2) at 800 degrees C. The maximum power densities of a cell using the PSCF-GDC cathode were 520 mW cm(-2), 435 mW cm(-2) and 303 mW cm(-2) at 800 degrees C, 750 degrees C and 700 degrees C, respectively. (C) 2008 Elsevier B.V. All rights reserved.