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AssigneeSamsung SDI Co., Ltd.
InventorsBongchull Kim, Jaehou Nah, Jangho Lee, Dongwoo Kim
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An anode for a lithium rechargeable battery includes an active material layer that includes a metal-carbon composite active material including a carbonaceous active material and at least one active material selected from the group consisting of a metal or a metal oxide, graphite particles having surfaces that are coated or partially coated with a resin f, and a binder that binds and fixes the active material particles and the graphite particles to each other. The anode further includes a collector on which the active material layer is disposed. The resin-coated graphite particles maintain multiple conductive contact surfaces between the active material particles due to adhesiveness of the resin even when the volume of the metal-carbon composite active material particles is changed during charging and discharging, and prevent a reduction of the battery capacity and improve the lifetime of the battery.
An anode for a lithium rechargeable battery, comprising:
Dependencies are inferred from the claim text.
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Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof: electrodes based on…
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof: electrodes based on…
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof: electrodes based on…
Selection of substances as active materials, active masses, active liquids: of elements or alloys
About 4 years 8 months of term left · ends 15 Jun 2031 (estimated)
This application claims the benefit of Korean Patent Application No. 2007-106595, filed Oct. 23, 2007, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.
1. Field of the Invention
Aspects of the present invention relates to an anode for a lithium rechargeable battery and a lithium rechargeable battery using the same, and more particularly, to an anode for a lithium rechargeable battery that uses a composite material containing metal, or non-metal, oxides thereof and carbonaceous material as an anode active material, and a lithium rechargeable battery using the same.
Hereinafter, the preferred embodiments of the present invention will be described in detail. The aspects and features of the present invention and methods for achieving the aspects and features will be apparent by referring to the embodiments to be described in detail. However, the present invention is not limited to the embodiments disclosed hereinafter, but can be implemented in diverse forms. The matters defined in the description, such as the detailed construction and elements, are nothing but specific details provided to assist those of ordinary skill in the art in a comprehensive understanding of the invention, and the present invention is only defined within the scope of the appended claims.
According to one embodiment of the present invention, an anode for a lithium rechargeable battery comprises an active material layer that includes metal-carbon composite active material particles and graphite particles coated with resin on at least a portion of a surface thereof. The metal-carbon composite active material particles comprise a carbonaceous active material and at least one active material selected from metal or metal oxide. The active material layer further includes a binder that binds and fixes the active material particles and the graphite particles to each other. The anode further includes a collector, and the active material layer is stacked on the surface of the collector.
As a specific, non-limiting example, the metal-carbon composite active material may be a composite formed by mixing a carbonaceous material and at least one selected from Sn, Al, Si, SnO, SnO2 and SiO2. The discharge capacity of the metal-carbon composite active material may be within the range of 450 to 1,000 mAh/g. Methods of mixing include, for example, dispersing the metal or metal oxide in the carbonaceous material or coating the metal or metal oxide with the carbonaceous material, but is not limited thereto.