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AssigneeSumitomo Metal Mining Co., Ltd.
InventorsNorimichi Yonesato, Yasumasa Hattori, Hideyuki Yamashita, Tai Itou
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A nickel oxide powder material that can restrain cracking of electrode due to oxidation expansion and peeling from a electrolyte and thus can decrease deterioration of the power generation characteristics, even in the case that the anode is exposed to an oxidizing atmosphere caused by the disruption of the fuel supply at operating temperature or the like when used as an anode material for a solid oxide type fuel cell and its efficient production method, and the anode material for the solid oxide type fuel cell using the nickel oxide powder material. The nickel oxide powder material for an anode material constituting a solid oxide type fuel cell is characterized in that it is made up of a core particle (a) composed of a nickel oxide fine particle and a coating layer (b) including a zirconium hydroxide, which is formed on the surface of the core particle (a), as its main component, and that the zirconium content contained in the coating layer (b) is 0.001 to 0.01 g/m2 per surface area of the nickel oxide fine particle.
A nickel oxide powder material to be used for an anode material constituting a solid oxide type fuel cell, characterized in that it comprises a core particle (a) composed of a nickel oxide particle and a coating layer (b) comprising a zirconium hydroxide, which is formed on the surface of the core particle (a), as its main component and that the zirconium content to be contained in the coating layer (b) is 0.001 to 0.01 g/m2 per surface area of the nickel oxide particle, and the layer thickness of said coating layer (b) is 0.5 to 5 nm.
A nickel oxide powder material to be used for an anode material constituting a solid oxide type fuel cell, characterized in that it comprises a core particle (a) composed of a nickel oxide particle and a coating layer (b) comprising a zirconium oxide, which is formed on the surface of the core particle (a), as its main component and that the zirconium content to be contained in the coating layer (b) is 0.001 to 0.01 g/m2 per surface area of the nickel oxide particle, and the layer thickness of said coating layer (b) is 0.5 to 5 nm.
Dependencies are inferred from the claim text.