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Abstract
Preparation of LaNi 1 − x Fe x O 3, which is one of the candidate materials of solid oxide fuel cell cathode, current collecting layer and interconnect coating was examined with Pechini method and solid state reaction method. Single phase LaNi 1 − x Fe x O 3 with large Ni content has successfully been prepared by low temperature sintering as 750 °C with Pechini method, whereas large amount of raw materials has remained with solid state reaction method by sintering at the same temperature. It can be ascribed to more homogenous cation distribution in raw powder material prior to sintering with Pechini method. It has also been revealed that LaNi 1 − x Fe x O 3 with x lower than 0.3 is thermodynamically unstable in air above 1000 °C. LaNi 0.6Fe 0.4O 3 showed superior property as cathode material with high electrical conductivity, thermodynamic stability and appropriate sintering property.
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