# US 2020/0403231 A1 · Multi-Layered Anode Containing Silicon-Based Compound and Lithium Secondary Battery Including the Same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0403231 A1 - Document ID: US20200403231A1 - Status: Published application - Kind: A1 - Application number: 16/968,779 - Filed: 2019-10-02 - Published: 2020-12-24 - Earliest claimed: 2018-10-02 - Assignees: LG Chem, Ltd. - Applicants: LG Chem, Ltd. - Inventors: Dong Hwi Kim; Tae Hee Kim; Nanji Yun; Yojin Kim; Hyunkyung Do - Web page: https://patentgrep.com/patent/US20200403231A1 ## CPC - H01M 4/131: Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx - H01M 4/366: {as layered products} - H01M 4/133: Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx - H01M 4/364: {as mixtures} - H01M 4/483: {for non-aqueous cells (H01M4/485 takes precedence)} - H01M 4/587: for inserting or intercalating light metals - H01M 4/622: {being polymers} - H01M 4/625: {Carbon or graphite} - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 2004/021: {Physical characteristics, e.g. porosity, surface area} - H01M 2004/027: {Negative electrodes} - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract The present disclosure relates to an anode for a lithium secondary battery and a lithium secondary battery including the same, wherein the anode includes an anode current collector; a first anode active material layer formed on at least one surface of the anode current collector and containing a mixture of natural graphite and artificial graphite in a weight ratio of 13˜34:66˜87 and a first binder as the anode active material; and a second anode active material layer formed on the first anode active material layer and containing a mixture of artificial graphite and a silicon-based compound in a weight ratio of 91˜99:1˜9 and a second binder as the anode active material. ## Claims ### Claim 1 An anode for a lithium secondary battery, comprising an anode current collector; a first anode active material layer formed on at least one surface of the anode current collector, wherein the first anode active material layer contains a mixture of natural graphite and artificial graphite in a weight ratio of 13 to 34:66 to 87 as the anode active material and a first binder; and a second anode active material layer formed on the first anode active material layer, wherein the second anode active material layer contains a mixture of artificial graphite and a silicon-based compound in a weight ratio of 91 to 99:1 to 9 as the anode active material and a second binder. ### Claim 2 (depends on 1) The anode for a lithium secondary battery of claim 1, wherein the first anode active material layer contains the mixture of natural graphite and artificial graphite in a weight ratio of 20 to 30:70 to 80 as the anode active material, and the second anode active material layer contains the mixture of artificial graphite and a silicon-based compound in a weight ratio of 95 to 99:1 to 5 as the anode active material. ### Claim 3 (depends on 1) The anode for a lithium secondary battery of claim 1, wherein the silicon-based compound is a silicon-based oxide represented by the following Chemical Formula 1: SiOx [Chemical Formula 1] wherein 0