The composite cathode system is examined for suitability on a Ce0.9Gd0.1O2-delta electrolyte based solid oxide fuel cell at intermediate temperatures (500-700 degrees C). The cathode is characterized for electronic conductivity and area specific charge transfer resistance. This cathode system is chosen for its excellent thermal expansion match to the electrolyte, its relatively high conductivity (115 S cm(-1) at 700 degrees C), and its low activation energy for oxygen reduction (99 kJ mol(-1)). It is found that the decrease of sintering temperature of the composite cathode system produces a significant decrease in charge transfer resistances to as low as 0.25 Omega cm(2). The conductivity of the cathode systems is between 40 and 88 S cm(-1) for open porosities of 30-40%. (C) 2009 Elsevier B.V. All rights reserved.