SrTa(x)Ti(1-x)O(3) (STT) with x = 0.01, 0.05, and 0.10, has been investigated as a potential electron conductor for solid oxide fuel cell (SOFC) anodes. SIT was found to be chemically stable under oxidizing and reducing conditions and chemically compatible with yttria-stabilized zirconia (YSZ). The coefficient of thermal expansion (CTE) was near that of YSZ, ranging from 11.3 to 11.8 x 10(-6) K(-1). The conductive properties of bulk SIT and porous STT-YSZ composites were studied under relevant SOFC operating temperatures and redox cycling conditions. In order to achieve reasonable conductivities, samples were initially reduced at 1673 K. Conductivity after redox cycling was higher for lower dopant concentrations. The redox stable conductivity of a porous composite with x = 0.01 was 1.1 S/cm at 1073 K in humidified H(2) (3% H(2)O). Fuel cell tests indicated an anode impedance of 0.4 Omega cm(2) at 973 K in humidified H(2) for STT-YSZ anodes infiltrated with 3 wt.% CeO(2) and 1 wt.% Pd. (C) 2010 Elsevier B.V. All rights reserved.