| 摘要 |
PURPOSE:To provide a selectively permeable membrane for oxygen capable of heavy load discharge over a long period of time, excellent in preservability and suitable for preparing a thin air electrode, obtained by integrally adhering a thin layer of metal oxide having a rutile type crystal structure on one surface of a porous membrane. CONSTITUTION:As a porous membrane, a porous fluorine membrane, a porous polycarbonate membrane or a porous cellulose ester membrane can be recommended. Metal oxide having a rutile type crystal structure has such a structure that a coordinate polyhedron shown by a chemical formula AO2 is a regular octahedron and aggregates each arranged unidimensionally in relation holding an edge thereof in common are combined and, concretely, titamium dioxide, vanadium dioxide or molybdenum dioxide alone or a composite in an arbitrary combination comprising two kinds or more of them can be mentioned. In the case of a composite membrane having a two-layered structure, a thin layer of metal oxide with a rutile type crystal structure is directly adhered on one surface of the porous membrane by a vapor deposition method on a sputtering method. |
