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Power Corporation, USA Here a solid oxide fuel cell electrode is produced by a sintering process. An underlayer is applied to the electrolyte of a solid oxide fuel cell in the form of a slurry, and dried. An overlayer is applied to the underlayer, and dried. The dried under-and overlayers are then sintered to form a fuel electrode. The two layers comprise a combination of electrode metal and stabilised zirconia, with the overlayer comprising a greater percentage of electrode metal. The use of more stabilised zirconia in the underlayer provides good adhesion to the electrolyte, while the use of more electrode metal in the overlayer provides good electrical conductivity. The sintered electrodes exhibit favourable performance characteristics, including good porosity, adhesion, electrical conductivity and freedom from degradation.
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