Abstract
Bimetal oxides Ni 1− x Fe x O ( x = 0.01, 0.04, 0.08, 0.1, 0.15, 0.2, 0.4, 0.5) were synthesized and studied as anodes for intermediate temperature solid oxide fuel cells (SOFCs) based on yttria-stabilized zirconia (YSZ) film electrolyte. A single cell consisted of Ni 1− x Fe x O-YSZ anode, YSZ electrolyte film, LSM–YSZ composite cathode was prepared and tested at the temperature from 600 °C to 850 °C with humidified hydrogen (75 ml min −1) as fuel and ambient air as oxidant. It was found that the cell with Ni 0.9Fe 0.1O-YSZ anode showed the highest power density, 1.238 W cm −2 at 850 °C, among the cells with different anode composition. The promising performance of Ni 1− x Fe x O as anode suggests that bimetal anodes are worth studied for SOFCs in future.
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