Fuel cell
AssigneeNissan Motor Co., Ltd.
InventorsMotoki Yaginuma, Toshikazu Kotaka
Life of this patent
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Abstract
A fuel cell includes a membrane electrode assembly, a frame arranged on an outer periphery portion of the membrane electrode assembly, and a separator defining a gas flow channel between the separator and the membrane electrode assembly and between the separator and the frame. A diffuser portion which is a part of the gas flow channel, is formed between the separator and the frame. An electrode layer includes a metal porous body which is an electrode surface layer and has gas permeability. The metal porous body has at an end portion thereof, an extension part covering a region corresponding to the diffuser portion of the frame.
Claims21
-12. (canceled)
A fuel cell comprising:
- a membrane electrode assembly in which an electrolyte membrane is sandwiched between a pair of electrode layers;
- a frame that is arranged on an outer periphery portion of the membrane electrode assembly;
- and
- a separator that defines a gas flow channel between the separator and the membrane electrode assembly and between the separator and the frame,
- wherein
- a diffuser portion which is a part of the gas flow channel, is formed between the separator and the frame,
- each of the electrode layers includes a metal porous body which is an electrode surface layer and has gas permeability, and
- both metal porous bodies respectively have at end portions thereof, extension parts covering a region corresponding to the diffuser portion of the frame.
A fuel cell comprising:
- a membrane electrode assembly in which an electrolyte membrane is sandwiched between a pair of electrode layers;
- a frame that is arranged on an outer periphery portion of the membrane electrode assembly;
- and
- a separator that defines a gas flow channel between the separator and the membrane electrode assembly and between the separator and the frame,
- wherein
- a diffuser portion which is a part of the gas flow channel, is formed between the separator and the frame,
- each of the electrode layers includes a metal porous body which is an electrode surface layer and has gas permeability,
- the metal porous body in one of the electrode layers which has a gas pressure lower than the other of the electrode layers, has at an end portion thereof, an extension part covering a region corresponding to the diffuser portion of the frame, and
- the extension part is connected to the frame.
Dependencies are inferred from the claim text.