| 摘要 |
In a proton conductor having a perovskite-type crystal structure expressed by the compositional formula A a B 1-x B' x O 3-´ , the A element is an alkaline-earth metal and is contained in a range of 0.4<a<0.9, where the a value represents a mole fraction of this element, and the B' element is a trivalent group 3 or group 13 element and is contained in a range of 0.2<x<0.6, where the x value represents a mole fraction of this element. |
