# US 12,183,915 B2 · Anode material, and electrochemical device and electronic device using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,183,915 B2 - Document ID: US12183915B2 - Status: Granted - Kind: B2 - Application number: 17/440,723 - Filed: 2020-03-05 - Published: 2022-06-02 - Granted: 2024-12-31 - Earliest claimed: 2019-03-19 - Assignees: Ningde Amperex Technology Limited - Applicants: Ningde Amperex Technology Limited - Inventors: Zhihuan Chen; Daoyi Jiang; Hang Cui; Yuansen Xie - Web page: https://patentgrep.com/patent/US12183915B2 ## CPC - H01M 4/366: {as layered products} - H01M 4/0471: {involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis} - H01M 4/139: Processes of manufacture - H01M 4/386: {Silicon or alloys based on silicon} - H01M 4/483: {for non-aqueous cells (H01M4/485 takes precedence)} - H01M 4/587: for inserting or intercalating light metals - H01M 4/62: Selection of inactive substances as ingredients for active masses, e.g. binders, fillers - 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 application relates to an anode material, and an electrochemical device and an electronic device using the same. The anode material of the present application includes: a silicon compound SiOx, where x is 0.5-1.5; an oxide MeOy layer, the MeOy layer coating at least a portion of the silicon compound SiOx, where Me includes at least one of Al, Si, Ti, Mn, V, Cr, Co or Zr, where y is 0.5-3; and a carbon nanotube layer, the carbon nanotube layer coating at least a portion of the MeOy layer. The anode material can significantly enhance the cycle performance and rate performance of the electrochemical device, and significantly reduce the impedance of the electrochemical device. ## Claims ### Claim 1 An anode material, comprising: a silicon compound SiOx, wherein x is in a range of 0.5-1.5; an oxide MeOy layer, the oxide MeOy layer coating at least a portion of the silicon compound SiOx, wherein Me comprises at least one of Al, Si, Ti, Mn, V, Cr, Co or Zr, wherein y is in a range of 0.5-3; and a carbon nanotube layer, the carbon nanotube layer coating at least a portion of the oxide MeOy layer, wherein the anode material further comprises a carbon layer obtained by sintering a layer of an organic carbon precursor. ### Claim 2 (depends on 1) The anode material according to claim 1, wherein the silicon compound SiOx comprises a crystalline silicon compound SiOx, an amorphous silicon compound SiOx or a combination thereof. ### Claim 3 (depends on 1) The anode material according to claim 1, wherein the silicon compound SiOx comprises SiO, SiO2 or a combination thereof. ### Claim 4 (depends on 1) The anode material according to claim 1, wherein the anode material comprises nano Si crystalline grains. ### Claim 5 (depends on 4) The anode material according to claim 4, wherein a size of each of the nano Si crystalline grains is in a range of about 0.5 nm-about 100 nm. ### Claim 6 (depends on 1) The anode material according to claim 1, wherein the oxide MeOy layer comprises a crystalline oxide MeOy, an amorphous oxide MeOy or a combination thereof. ### Claim 7 (depends on 1) The anode material according to claim 1, wherein an average particle diameter of the silicon compound SiOx is in a range of about 500 nm-about 30 μm. ### Claim 8 (depends on 1) The anode material according to claim 1, wherein a thickness of the oxide MeOy layer is in a range of about 1 nm-about 1000 nm. ### Claim 9 (depends on 1) The anode material according to claim 1, wherein a thickness of the oxide MeOy layer is in a range of about 1 nm-about 50 nm. ### Claim 10 (depends on 1) The anode material according to claim 1, wherein the carbon nanotubes comprise single-walled carbon nanotubes, multi-walled carbon nanotubes or a combination thereof. ### Claim 11 (depends on 1) The anode material according to claim 1, wherein a diameter of the carbon nanotubes is in a range of about 2 nm-about 30 nm, and the carbon nanotubes have a length-to-diameter ratio in a range of about 50-about 3000. ### Claim 12 (depends on 1) The anode material according to claim 1, wherein a content of the carbon nanotubes is in a range of about 0.1 wt %-about 10 wt % based on the total weight of the anode material. ### Claim 13 (depends on 1) The anode material according to claim 1, wherein the carbon layer is located between the oxide MeOy layer and the carbon nanotube layer. ### Claim 14 (depends on 1) The anode material according to claim 1, wherein the carbon layer coats the carbon nanotube layer. ### Claim 15 (depends on 1) The anode material according to claim 1, wherein a thickness of the carbon layer is in a range of about 1 nm-about 100 nm. ### Claim 16 (depends on 1) The anode material according to claim 1, wherein a specific surface area of the anode material is in a range of about 1 m2/g-about 50 m2/g. ### Claim 17 An anode, comprising an anode material, wherein the anode material comprises: a silicon compound SiOx, wherein x is in a range of 0.5-1.5; an oxide MeOy layer, the oxide MeOy layer coating at least a portion of the silicon compound SiOx, wherein Me comprises at least one of Al, Si, Ti, Mn, V, Cr, Co or Zr, wherein y is in a range of 0.5-3; and a carbon nanotube layer, the carbon nanotube layer coating at least a portion of the oxide MeOy layer, wherein the anode material further comprises a carbon layer obtained by sintering a layer of an organic carbon precursor. ### Claim 18 An electrochemical device, comprising an anode, wherein the anode comprises an anode material, wherein the anode material comprises: a silicon compound SiOx, wherein x is in a range of 0.5-1.5; an oxide MeOy layer, the oxide MeOy layer coating at least a portion of the silicon compound SiOx, wherein Me comprises at least one of Al, Si, Ti, Mn, V, Cr, Co or Zr, wherein y is in a range of 0.5-3; and a carbon nanotube layer, the carbon nanotube layer coating at least a portion of the oxide MeOy layer, wherein the anode material further comprises a carbon layer obtained by sintering a layer of an organic carbon precursor. ### Claim 19 (depends on 18) The electrochemical device according to claim 18, wherein the electrochemical device is a lithium-ion battery.