| abstract |
A proton conductive solid electrolyte member having a structure in which an electrolyte layer and an anode layer are laminated, wherein the electrolyte layer is a layer containing a metal oxide having a perovskite crystal structure, and the anode layer is formed of Fe 2 O 3 and the It is a layer containing a metal oxide, The said metal oxide is a solid electrolyte member which is a mixture or solid solution of the metal oxide represented by following formula [1], or the metal oxide represented by following formula [1]. A a B b M c O 3 - δ Equation [1] (A is at least one element selected from the group consisting of Ba and Ca, B is at least one element selected from the group consisting of Ce and Zr, M is Y, Yb, Er, Ho, Tm, Gd, At least one element selected from the group consisting of In and Sc, a is a number satisfying 0.85 ≦ a ≦ 1, b is a number satisfying 0.50 ≦ b <1, and c is satisfying c = 1-b Is the amount of oxygen deficiency.) |