Patent ID: 8435481

Claim:
A material for a solid oxide fuel cell, the material comprising: a lanthanum metal oxide having a perovskite-type crystal structure; and a ceria metal oxide, wherein the ceria metal oxide comprises at least one material selected from the group consisting of metal oxides represented by Formula 1 below and metal oxides represented by Formula 2 below: (1 −a−b )Ce 1-x A x O 2-δ +a B 2 O 5 +b BO 3 Formula 1 Ce 1-x-y A x B y O 2-γ Formula 2 wherein 0≦a≦0.01, 0≦b≦0.02, 0<2a+b≦0.02, 0<x<0.3, 0<y≦0.02, δ and γ are selected so that the metal oxides of Formulas 1 and 2, respectively, are both electrically neutral, A is a rare earth metal, and B is a 5-valent metal or a 6-valent metal.