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    • 5. 发明授权
    • Separator for fuel cell and a method for producing the separator
    • 燃料电池用分离器及其制造方法
    • US06383678B1
    • 2002-05-07
    • US09452131
    • 1999-12-01
    • Michiyo KanekoSeiji Mizuno
    • Michiyo KanekoSeiji Mizuno
    • H01M2100
    • H01M8/0226H01M8/0204H01M8/0206H01M8/0213H01M8/0221H01M8/0228Y02P70/56Y10T428/24959
    • A separator for an electrochemical fuel cell provides a path for a fuel gas or an oxidative gas to an electrode and functions as a wall of a unit cell of the electrochemical fuel cell. The separator comprises a conductive metal plate, a conductive coating membrane, and a tight coating membrane. The conductive coating membrane coats the conductive metal plate where the separator contacts the electrode. The tight coating membrane coats the conductive metal plate where the conductive coating membrane does not coat the conductive metal plate. A conductivity of the conductive coating membrane is higher than the tight coating membrane, and the tight coating membrane has a tighter adhesion to the conductive metal plate than the conductive coating membrane. The conductive coating membrane comprises carbon, a precious metal, or an alloy of nickel and chromium. The tight coating membrane comprises a close-grained resin. In the electrochemical fuel cell including the separator, the electric resistance between the separator and the electrode can be restrained low, and a rust problem caused by coming-off of the conductive coating membrane from the conductive metal plate can be avoided with high reliability.
    • 用于电化学燃料电池的隔板提供用于燃料气体或氧化气体到电极的路径,并且用作电化学燃料电池的单元电池的壁。 隔板包括导电金属板,导电涂层膜和紧密涂覆膜。 导电涂层膜涂覆隔板与电极接触的导电金属板。 紧密涂布膜涂覆导电金属板,导电涂层膜不涂覆导电金属板。 导电性涂膜的导电性高于紧密涂膜,并且紧密涂膜对导电性金属板的粘附性比导电性涂膜更紧密。 导电涂层膜包括碳,贵金属或镍和铬的合金。 紧密涂层膜包括密粒树脂。 在包含隔板的电化学燃料电池中,可以将隔膜和电极之间的电阻抑制得较低,可以高可靠性地避免导电性涂膜从导电性金属板脱落引起的锈蚀问题。