| 摘要 |
PURPOSE:To prevent any generation of a crack in an electrolytic plate so as to enhance reliability of a battery by providing gas leakage preventing members in the vicinity of the boundary of a rib and the electrolytic plate in a portion where a wet seal portion is constituted in such a manner as to hold the electrolytic plate. CONSTITUTION:In a fused carbonate type fuel cell, gas leakage preventing members 7, 7' are provided, in such a manner as to hold an electrolytic plate between them, in the vicinity of the boundary of a rib 9 and the electrolytic plate 1 in a portion where the rib 9 disposed around a bipolar plate 6 is brought into contact with the electrolytic plate 1 to constitute a wet seal portion 8. The gas leakage preventing member has the same composition as that of the electrolytic plate. Therefore, it is possible to prevent any generation of a shearing crack due to non-conformity of thickness, and further, to prevent any leakage of gas even if a crack is generated in the main body of the electrolytic plate 1.
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