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US 12,087,950 B2Granted
Gas diffusion layer for metal-air battery, method of manufacturing the same, and metal-air battery including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsMokwon Kim, Joonhee Kim, Jungock Park, Dongmin Im
Life of this patent
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Abstract
A gas diffusion layer for a metal-air battery, the gas diffusion layer including: a porous layer including non-conductive fiber structures, a conductive carbon layer including a carbon material that is disposed on a surface of a non-conductive fiber structure of the plurality of non-conductive fiber structures.
Claims22
A gas diffusion layer for a metal-air battery, the gas diffusion layer comprising:
- a porous layer comprising
- a plurality of non-conductive fiber structures;
- and
- a plurality of adhesive layers and a plurality of conductive carbon layers, wherein each of the plurality of adhesive layers and each of the plurality of conductive carbon layers is disposed on a surface of each non-conductive fiber structure of the plurality of non-conductive fiber structures,
- wherein each conductive carbon layer of the plurality of conductive carbon layers comprises a carbon material,
- wherein an adhesive layer of the plurality of adhesive layers is disposed on the surface of each non-conductive fiber structure and a conductive carbon layer of the plurality of conductive carbon layers is disposed directly on a surface of the adhesive layer, and
- wherein the adhesive layer bonds the conductive carbon layer to the surface of each non-conductive fiber structure,
- wherein a thickness of the conductive carbon layer is equal to or greater than about 1% and less than or equal to about 10% of an average thickness of the non-conductive fiber structure and
- wherein the plurality of adhesive layers and the plurality of conductive carbon layers are alternately disposed 5 to 20 times on the surface of each non-conductive fiber structure, and the gas diffusion layer has a resistivity of less than 6,000 ohms per square.
6 more elements
A metal-air battery comprising:
- a negative electrode comprising a metal;
- a positive electrode comprising a positive electrode layer comprising a catalyst and a gas diffusion layer for the metal-air battery;
- and
- an electrolyte between the negative electrode and the positive electrode,
- wherein the gas diffusion layer comprises:
- a porous layer comprising
- a plurality of non-conductive fiber structures;
- and
- a plurality of adhesive layers a plurality of conductive carbon layers, wherein each of the plurality of adhesive layers and each of the plurality of conductive carbon layers is disposed directly on a surface of each non-conductive fiber structure of the plurality of non-conductive fiber structures;
- and
- a plurality of conductive carbon layers,
- wherein each of the plurality of conductive carbon layers comprises a carbon material, and
- wherein an adhesive layer of the plurality of adhesive layers is disposed on the surface of each non-conductive fiber structure and a conductive carbon layer of the plurality of conductive carbon layers is disposed on the adhesive layer,
- wherein the adhesive layer bonds the conductive carbon layer to the surface of each non-conductive fiber structure,
- wherein a thickness of the conductive carbon layer is equal to or greater than about 1% and less than or equal to about 10% of an average thickness of the non-conductive fiber structure and
- wherein the plurality of adhesive layers and the plurality of conductive carbon layers are alternately disposed 5 to 20 times on the surface of each non-conductive fiber structure, and the gas diffusion layer has a resistivity of less than 6,000 ohms per square.
13 more elements
Dependencies are inferred from the claim text.