To provide a fuel cell which can operate in a moderate temperature range, by raising the operating temperature in a solid polymer membrane fuel cell and lowering the operating temperature of a solid oxide type fuel cell.
Dense layers of hydrogen permeable metal 21, 22 and 24 are provided on both sides of polymer electrolyte layer 20 in the solid polymer membrane fuel cell. Thus, the break off of the moisture of the electrolyte layer 20 is suppressed, and the operating temperature can be raised; while in the solid oxide type fuel cell, the dense membrane of hydrogen permeable metal is made the base material and the electrolyte layer is formed thereon. In this way, the electrolyte layer can be made sufficiently thin, and the operating temperature can be lowered.
IIJIMA MASAHIKO
AOYAMA SATOSHI
IGUCHI SATORU
NUMATA KOICHI
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