Morphology Control of Ni-GDC Cermet Anode for Lower Temperature SOFC

Abstract

A Ni-GDC cermet is expected as one of the materials for lower temperature SOFC anode, which is obtained from reducing NiO-GDC powder. In this work, we report the effects of NiO-GDC powders produced by mechano-chemical technique on the fabricating processes of anode and the electrical performance of the anode. The properties of sintering and dispersion of NiO-GDC powders were studied and the morphology of Ni-GDC anode was characterized. The performance of the cell which consisted of Ni-GDC anode, GDC electrolyte and LSCF cathode was evaluated by current interruption method. The experimental results indicated that the maximum power densities were 0.93 and 0.31 W/cm2 when the cell was operated at 600{degree sign}C and 500{degree sign}C respectively.