| 摘要 |
PROBLEM TO BE SOLVED: To provide air electrode material which has higher electrode activity in comparison with manganese family material, for a composite air electrode for a solid fuel cell for low temperature operation. SOLUTION: This air electrode material comprises composite of an ion conductive body A1- XBXGa1- YMgYO3 or the same with transition metal added and an electron conductive body C1- XDXMnO3 (0.05<X<0.30), also A or C is any one of La, Pr, Nd, and Sm, also B or D contains either one of Sr or Ca, or both, and a percentage content for their sum is set at 0.05-0.30. Thereby, a cell which has high electrode activity and excellent characteristics with a small operating voltage applied, even at about 800 deg.C, in comparison with La0.8 Sr0.2 MnO3 , material used in the past. |
