NiO-Fe(2)O(3)/gadolinium-doped CeO(2) (GDC), NiO-Fe(2)O(3)/yttria-stabilized ZrO(2) (YSZ) anode supported fuel cells were fabricated at co-sintering temperatures of anode-electrolyte from 1250 degrees C to 1400 degrees C. The volumetric shrinkage of the anode-electrolytes and the porosity of the anode tube were studied systematically at different temperatures. 1300 degrees C is the marginal temperature to obtain sufficient electrocatalytic activity of electrodes, and a higher temperature is needed to suppress gas leakage through the scandia-stabilized zirconia (ScSZ) electrolyte. At each co-sintering temperature from 1250 degrees C to 1400 degrees C, the porosity of NiO-Fe(2)O(3)/GDC anode tubes is nearly 10% higher than that of NiO-Fe(2)O(3)/YSZ anode tubes. SEM results exhibited the anode-supported electrolyte tends to be more dense as co-sintering temperature increasing to 1400 degrees C from 1250 degrees C. However, the high co-sintering temperature of 1400 degrees C will result in low porosity of anode which negatively affected the power density. (C) 2011 Elsevier B.V. All rights reserved.