| 简介 |
PROBLEM TO BE SOLVED : To provide : a composite membrane structure which can be manufactured at low cost, and has superior electrochemical characteristics such as power generation characteristics with a low internal resistance, and excellent hydrogen permeability; a fuel cell; and a manufacturing methods of those.
SOLUTION : The composite membrane structure consists of a hydrogen permeable metal membrane 1 and a solid electrolyte membrane 2. The solid electrolyte membrane 2 is formed by a coating method on the surface of the hydrogen permeable metal membrane 1 which is thermal oxidation treated, has a basic structure of a perovskite type oxide (ABO3) which arranges a bivalent alkaline earth metal in A site and arranges quadrivalent cerium or quadrivalent cerium and quadrivalent zirconium in B site, is made of a composite having a crystal structure which substitutes a part of cerium (Ce) by a trivalent rare earth element, and has a single phase with a thickness of 30 μm or less.
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