Patent ID: 7608357

Claim:
A powder fuel electrode material for a fuel electrode of a solid oxide fuel cell, the powder fuel electrode material consisting essentially of a mixture of: a nickel-based powder material comprising at least one of nickel and nickel oxide; and at least one of titanium oxide (IV) and a titanium source capable of changing into titanium oxide (IV) by heat treatment in air mixed into the nickel-based material powder; wherein the powder fuel electrode material further contains a solid electrolyte exhibiting oxide ion conductivity, which comprises one of stabilized zirconia containing one or more oxide materials selected from the groups consisting of Sc 2 O 3 , Y 2 O 3 , CeO 2 , CaO, MgO, a ceria solid solution containing at least one of Sm 2 O 3 , Gd 2 O 3 and Y 2 O 3 , and Bi 2 O 3 , mixed into the powder fuel electrode material after the at least one of titanium oxide (IV) and the titanium source is mixed into the nickel-based powder material; and wherein the powder fuel electrode material contains 35 to 70 wt % of the solid electrolyte with respect to nickel oxide.