Proton conductive material, proton conductive structure, fuel cell, and method for producing proton conductive structure

摘要

PPROBLEM TO BE SOLVED: To provide a proton (a hydrogen ion) conductive material having high performance, a proton conductive structure, a fuel cell and the manufacturing method of the proton conductive material. PSOLUTION: The proton conductive material is am amorphous structure material having composition comprising at least one kind of a first element selected from the group comprising Mg, Ca, Sr, and Ba, at least one kind of a second element selected from the group comprising Ce, Zr, Ti, and Hf, and oxygen, and in the amorphous structure, a position of a first peak of a diffraction pattern of the material in X-ray diffraction measurement using CuK rays is present between 25 and 35, and the half-value width of the peak is 2 or more. The proton conductive material is manufactured by direct growth on a substrate having hydrogen transmission property at low temperature and used for a solid electrolyte for a fuel cell. PCOPYRIGHT: (C)2005,JPO&NCIPI