| 摘要 |
PROBLEM TO BE SOLVED: To realize an ion conductive oxide material having high mechanical strength and to provide a fuel cell or the like high in durability. SOLUTION: In the ion conductive oxide material composed of La(1-x) Srx Ga(1-y-z) Mgy Alz O3 , the oxide ion conductive material is formed on the condition of 0<x<=0.2, 0<y<=0.2, and 0<z<=0.4. And an electrochemically acting member such as a cell is formed by laminating the oxide ion conductive material composed of La(1-x) Srx Ga(1-y-z) Mgy Alz O3 wherein 0<x<=0.2, 0<y<=0.2 and 0<z⊖0.4 and an electrode material through a prescribed intermediate layer. As a result, the oxide ion conductive material is increased in mechanical strength and the durability of electrochemical devices such as a solid electrolyte type fuel cell using the same is improved. |
