| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a proton conductor, having a multilayer structure with a sealing property between a metal layer and an oxidation layer improved while sustaining high conductivity of a proton conductor, having a metal layer of hydrogen permeability and a solid electrolytic oxide layer of proton conductivity formed, a structure useful for a hydrogen device using this as a base unit, and to provide a fuel cell that uses this. <P>SOLUTION: The proton conductor is provided with a plurality of proton conductive oxide layers laminated on one surface of a hydrogen-permeable metal layer, and a proton conducting interlayer of its crystal lattice constant from 0.86 to 1 time of a metal layer structuring material is arranged between the metal layer and the oxide layer. Especially, the thickness of the interlayer of 1 to 20 nm, or further, the interlayer and the oxidation layer having the same chemical component system, above all, both layers made of oxide of a cation-substituted perovskite structure of a specific chemical composition of a specific thickness, are desired. With the proton conductor, as well as the structure that incorporates this, in the case of a fuel cell, a hitherto unknown high output and the stability can be obtained easily. <P>COPYRIGHT: (C)2007,JPO&INPIT |
