Anew type of Ni-free anode material based on Co0.5Fe0.5 + SDC (Sm0.2Ce0.8O1.9) was identified and evaluated using the La0.8Sr0.2Ga0.83Mg0.17O3 (LSGM) electrolyte-supported cells. The maximum power densities with humidified hydrogen at 800 degrees C using Au mesh and Pt mesh as anode current collector were 1.07 and 1.20 W cm(-2), respectively, which were comparable to that of the cell with the Ni + SDC anode. The cell with the new anode exhibited reasonable performance stability at 800 degrees C in hydrogen fuel; furthermore, no noticeable change in cell performance with the Co0.5Fe0.5 alloy anode was observed upon ordering reaction in the alloy to form the ordered alpha' phase at 650 degrees C. (C) 2008 Elsevier B.V. All rights reserved.