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AssigneeHonda Motor Co., Ltd.
InventorsHiromichi Yoshida, Shigeru Inai, Minoru Koshinuma, Ryo Jinba, Seiji Sugiura, Naoki Mitsuta, Katsumi Hayashi
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An oxygen-containing gas flow field is formed on a surface of a first metal separator. The oxygen-containing gas flow field is connected between an oxygen-containing gas supply passage and an oxygen-containing gas discharge passage. The oxygen-containing gas flow field comprises oxygen-containing gas flow grooves, and ends of the oxygen-containing gas flow grooves are extended outwardly beyond ends of electrode catalyst layer of a membrane electrode assembly, and connected to an inlet buffer and an outlet buffer. When the purging process is performed at the time of stopping operation of the fuel cell, the purging air supplied to the oxygen-containing gas flow field discharges water retained in the electrode catalyst layers from the ends to the outlet buffer.
A fuel cell formed by stacking an electrolyte electrode assembly and separators horizontally, said electrolyte electrode assembly including a pair of electrodes and an electrolyte interposed between said electrodes, wherein a reactant gas flow field is formed between said electrolyte electrode assembly and one of separators sandwiching said electrolyte electrode assembly for supplying a reactant gas along a surface of said electrode, and a reactant gas passage connected to an inlet or an outlet of said reactant gas flow field extends through said fuel cell in a stacking direction;
A fuel cell according to clam 1, wherein at the end of said reactant gas flow field, grooves of said reactant gas flow field are tapered to decrease the size of the openings of the grooves in cross section toward the reactant gas passage.
A fuel cell formed by stacking an electrolyte electrode assembly and separators horizontally, said electrolyte electrode assembly including a pair of electrodes and an electrolyte interposed between said electrodes, wherein a reactant gas flow field is formed between said electrolyte electrode assembly and one of separators sandwiching said electrolyte electrode assembly for supplying a reactant gas along a surface of said electrode, and a reactant gas passage connected to an inlet or an outlet of said reactant gas flow field extends through said fuel cell in a stacking direction;
A fuel cell formed by stacking an electrolyte electrode assembly and separators horizontally, said electrolyte electrode assembly including a pair of electrodes and an electrolyte interposed between said electrodes, wherein a reactant gas flow field is formed between said electrolyte electrode assembly and one of separators sandwiching said electrolyte electrode assembly for supplying a reactant gas along a surface of said electrode, and a reactant gas passage connected to an inlet or an outlet of said reactant gas flow field extends through said fuel cell in a stacking direction;
Dependencies are inferred from the claim text.