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OwnerKicheol Hong, Hyeji Park +3inventors
InventorsKicheol Hong, Hyeji Park, Youngseok Song, Kyungbae Kim, Heeman Choe
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Anode and cathode electrodes of a rechargeable lithium-ion battery are manufactured using metal foam. This lithium-ion battery with the metal-foam electrodes can have pores coated or filled, or both, with high-capacity active materials for greater energy density, better safety, improved power, and longer cycle life. Aluminum (or nickel) and copper metal-foam electrodes are manufactured using space-holder and freeze-casting methods. An anode can be filled with a graphite or silicon slurry, or a combination. A cathode can be filled with a lithium cobalt oxide (or other higher-capacity active materials) slurry. The relatively thick metal-foam electrodes are attached to the cell, separated by a separator, and wetted by an electrolyte, forming a high-capacity secondary battery. The battery will have higher density, improved power, and good cycle life.
A secondary lithium-ion battery device comprising:
A method of manufacturing process to form the porous metal-foam electrode of a rechargeable battery is a space-holder method comprising:
A secondary lithium-ion battery device assembled with metal foams as both the anode and cathode electrodes wherein the metal foam is fabricated by at least one of freeze casting or using a space holder, wherein the fabricated metal-foam anode and cathode electrodes are wet with electrolyte and coupled together in the form of a cylinder, disc, or coin and are separated by a separator.
Dependencies are inferred from the claim text.