Gas diffusion layer for fuel cell, method of manufacturing the same, and unit cell for fuel cell including the same
AssigneesHyundai Motor Company, Kia Corporation
InventorsJi Han Lee, Jae Man Park, Seung Tak Noh
Life of this patent
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Abstract
One embodiment provides a gas diffusion layer for a fuel cell constituting a unit cell of the fuel cell. The gas diffusion layer includes a base layer that includes short carbon fibers and has a reinforcing portion formed in a predetermined area thereof in a thickness direction with continuous carbon fibers oriented in the reinforcing portion. The reinforcing portion is formed adjacent to a first surface of the base layer. A micro porous layer is formed on the first surface of the base layer.
Claims18
A gas diffusion layer for a fuel cell constituting a unit cell of the fuel cell, the gas diffusion layer comprising:
- a base layer including short carbon fibers and having a reinforcing portion formed in a predetermined area thereof in a thickness direction with continuous carbon fibers oriented in the reinforcing portion, the reinforcing portion being formed adjacent to a first surface of the base layer;
- and
- a micro porous layer formed on the first surface of the base layer.
A method of manufacturing a gas diffusion layer for a fuel cell constituting a unit cell of the fuel cell, the method comprising:
- forming a base layer that includes short carbon fibers and has a reinforcing portion formed in a predetermined area thereof in a thickness direction with continuous carbon fibers oriented in the reinforcing portion, the reinforcing portion being formed adjacent to a first surface of the base layer;
- and
- forming a micro porous layer formed on the first surface of the base layer.
A unit cell for a fuel cell, the unit cell comprising:
- a membrane-electrode assembly;
- a pair of gas diffusion layers disposed on outer surfaces of the membrane-electrode assembly, respectively, wherein each of the gas diffusion layers includes a base layer including short carbon fibers and having a reinforcing portion formed in a predetermined area thereof in a thickness direction with continuous carbon fibers oriented in the reinforcing portion;
- and
- a pair of flow field type separators disposed on outer sides of the gas diffusion layers, respectively, and bent so that lands and channels are alternately formed;
- wherein the base layers of the gas diffusion layers are disposed to face the separators;
- wherein the gas diffusion layers further include a micro porous layer formed on a first surface of the base layers facing the membrane-electrode assembly;
- and
- wherein the reinforcing portions of the gas diffusion layers are formed adjacent to the first surface of the base layer facing the micro porous layer.
Dependencies are inferred from the claim text.