Fuel cell
AssigneeHonda Motor Co., Ltd.
InventorsYasuhiro WATANABE, Masaaki SAKANO, Satoru TERADA
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Abstract
A fuel cell is formed by stacking a plurality of unit cells. Each of the unit cells includes a membrane electrode assembly, and an anode side metal separator and a cathode side metal separator sandwiching the membrane electrode assembly therebetween. In a surface of the cathode side metal separator, metal portions are exposed in at least part of a second flat portion in an area surrounded by seal lines SL of the anode side metal separator. Cutouts are formed on a surface of the cathode side metal separator by cutting at least part of the second flat portion up to the metal portions thereby to expose the metal portions through the cutouts.
Claims6
A fuel cell formed by stacking an electrolyte electrode assembly and separators in a stacking direction, the electrolyte electrode assembly including a pair of electrodes and an electrolyte interposed between the electrodes, elastic seal members being formed integrally with the separators, a reactant gas flow field for supplying a reactant gas along an electrode surface being formed between the electrolyte electrode assembly and the separator, a reactant gas passage extending through the fuel cell in the stacking direction, the reactant gas passage being connected to the reactant gas flow field,
- a channel portion connecting the reactant gas passage to the reactant gas flow field being formed by the elastic seal members, between the pair of separators;
- wherein, in the channel portion, a separator body portion is exposed in at least part of the elastic seal members provided in the separators.
Dependencies are inferred from the claim text.