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US 10,763,519 B2Granted
Fuel cell stack and method of manufacturing fuel cell stack
AssigneeHyundai Motor Company
InventorSung Ho Lee
Life of this patent
Estimating the term…
Abstract
A fuel cell stack includes: a separator comprising channels and lands alternately repeated; and a gas diffusion layer in contact with the separator for transferring gas to a membrane-electrode assembly. The gas diffusion layer has a fiber arrangement structure having a predetermined directionality beneath the lands adjacent to opposite lateral sides of the channels based on a central portion of the channels to guide a transfer passage of the gas.
Claims10
A fuel cell stack comprising:
- a separator comprising channels and lands alternately repeated;
- and
- a gas diffusion layer in contact with the separator for transferring gas to a membrane-electrode assembly,
- wherein the gas diffusion layer has a fiber arrangement structure having a predetermined directionality beneath the lands, the lands being adjacent to opposite lateral sides of the channels with respect to a central portion of the channels to guide a transfer passage of the gas,
- each region beneath the lands and the channels includes the fiber arrangement structure, and
- a porosity of the fiber arrangement structure in regions beneath the lands is greater than a porosity of the fiber arrangement structure in regions beneath the channels.
3 more elements
A fuel cell stack comprising:
- a separator comprising channels and lands alternately repeated;
- and
- a gas diffusion layer in contact with the separator for transferring gas to a membrane-electrode assembly,
- wherein the gas diffusion layer has a fiber arrangement structure having a directional wave pattern allowing gas to flow in a diagonal way with respect to the lands, the lands being adjacent to opposite lateral sides of the channels,
- each region beneath the lands and the channels includes the fiber arrangement structure, and
- a porosity of the fiber arrangement structure in regions beneath the lands is greater than a porosity of the fiber arrangement structure in regions beneath the channels.
3 more elements
Dependencies are inferred from the claim text.