| abstract |
A material for a solid oxide fuel cell, the material including: a first metal oxide represented by Formula 1 and having a perovskite crystal structure; a second metal oxide having an electronic conductivity which is greater than an electrical conductivity of the first metal oxide, a thermal expansion coefficient which is less than a thermal expansion coefficient of the first metal oxide, and having a perovskite crystal structure; and a third metal oxide having a fluorite crystal structure: n Ba a Sr b Co x Fe y Z 1-x-y O 3-δ , Formula 1n wherein Z is at least one element selected from an element of Groups 3 to 12 and a lanthanide element, a and b satisfy 0.4≦a≦0.6, 0.4≦b≦0.6, and a+b≦1, x and y satisfy 0.6≦x≦0.9, 0.1≦y≦0.4, and x+y<1, and δ is selected such that the first metal oxide is electrostatically neutral. |