# US 12,015,145 B2 · Anode, and electrochemical device comprising the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,015,145 B2 - Document ID: US12015145B2 - Status: Granted - Kind: B2 - Application number: 17/265,871 - Filed: 2020-01-02 - Published: 2022-04-14 - Granted: 2024-06-18 - Earliest claimed: 2020-01-02 - Assignees: Ningde Amperex Technology Limited - Applicants: Ningde Amperex Technology Limited - Inventors: Jia Tang; Pengyang Feng; Jiali Dong; Yuansen Xie - Web page: https://patentgrep.com/patent/US12015145B2 ## CPC - H01M 4/364: {as mixtures} - H01M 4/366: {as layered products} - H01M 4/133: Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx - H01M 4/1393: of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx - H01M 4/525: of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy - H01M 4/587: for inserting or intercalating light metals - H01M 4/623: {fluorinated polymers} - H01M 2004/021: {Physical characteristics, e.g. porosity, surface area} - H01M 2004/027: {Negative electrodes} - H01M 2004/028: {Positive 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 An anode including a current collector and an anode active material layer on the current collector are provided. The anode active material layer includes first oriented particles having a first tilt angle θ1 inclined with respect to the direction of the current collector, and second oriented particles having a second tilt angle θ2 inclined with respect to the direction of the current collector. The first tilt angle θ1 and the second tilt angle θ2 are different and both not greater than 70°. ## Claims ### Claim 1 An anode, comprising: a current collector and an anode active material layer on the current collector; wherein, the anode active material layer comprises first oriented, particles having a first tilt angle θ1 inclined with respect to a direction of the current collector, and second oriented particles having a second tilt angle θ2 inclined with respect to the direction of the current collector, wherein the first tilt angle θ1 and the second tilt angle θ, are different and 0°≤θ1≤20° and 20°<θ2≤70°, and the anode active material layer has a C004/C110 ratio of 17.0-27.0. ### Claim 2 (depends on 1) The anode according to claim 1, wherein the first oriented particles meet at least one of conditions (a) to (d); (a) 0°≤θ1≤18°; (b) an area of the first oriented particles is 9%-23% of a cross sectional area of the anode active material layer; (c) in the first oriented particles, particles having a particle size of less than 10 μm account for 71.0%-93.0%; and (d) in the first oriented particles, particles having a particle size between 10 inn and 35 μm account for 7.0%-29.0%. ### Claim 3 (depends on 1) The anode according to claim 1, wherein 25°<θ2≤70°; and the second oriented particles have an area ratio relative to a cross sectional area of the anode active material layer higher than that of the first oriented particles. ### Claim 4 (depends on 1) The anode according to claim 1, wherein an area of the second oriented particles is 37%-55% of a cross sectional area of the anode active material layer. ### Claim 5 (depends on 1) The anode according to claim 1, wherein in the second oriented particles, particles having a particle size between 10 μm and 35 μm account for 22.0%-41.0% and particles having a particle size less than 10 μm account for 3.5%-5.6%. ### Claim 6 (depends on 1) The anode according to claim 1, wherein the anode active material layer further comprises third oriented particles having a third tilt angle θ3 inclined with respect to the direction of the current collector, wherein 70°<θ3≤90°, and an area of the third oriented particles is 1.0%45.0% of a cross sectional area of the anode active material layer. ### Claim 7 (depends on 6) The anode according to claim 6, wherein in the third oriented particles, particles having a particle size of less than 10 μm account for 90.0% or more. ### Claim 8 (depends on 1) The anode according to claim 1, wherein the anode active material layer includes a plurality of pores, and an area of the plurality of pores is 21.0%-43.0% of a cross sectional area of the anode active material layer. ### Claim 9 (depends on 1) The anode according to claim 1, wherein the anode active material layer has a thickness of 90 μm-143 μm, and the anode has a compacted density of 1.70 g/cm3-1.90 g/cm3. ### Claim 10 An electrochemical device, comprising an anode, the anode comprising a current collector and an anode active material layer on the current collector; wherein, the anode active material layer comprises first oriented particles having a first tilt angle θ1 inclined with respect to a direction of the current collector, and second oriented particles having a second tilt angle θ2 inclined with respect to the direction of the current collector, wherein the first tilt angle θ1 and the second tilt angle θ2 are different and 0°≤θ1≤20° and 20°<θ2≤70° are both not greater than 70°, and the anode active material layer has a C004/C110 ratio of 17.0-27.0. ### Claim 11 (depends on 10) The electrochemical device according to claim 10, wherein after the electrochemical device is fully charged and disassembled, the anode active material layer has a C004/C110 ratio of 10.22-19.35. ### Claim 12 (depends on 10) The electrochemical device according to claim 10, wherein the anode active material layer further comprises third oriented particles having a third tilt angle θ3 inclined with respect to the direction of the current collector, wherein 70°<θ1≤90°, and an area of the third oriented particles is 1.0%-15.0% of a cross sectional area of the anode active material layer. ### Claim 13 (depends on 12) The electrochemical device according to claim 12, wherein after the electrochemical device is fully discharged and disassembled, the anode meets at least one of conditions (1) to (3): (1) an area of the first oriented particles is 11.0%-25.0% of a cross sectional area of the anode active material layer; (2) an area of the second oriented particles is 29.0%-51.0% of a cross sectional area of the anode active material layer; or (3) an area of the third oriented particles is 5.0%-19.0% of a cross sectional area of the anode active material layer. ### Claim 14 (depends on 12) The electrochemical device according to claim 12, wherein after the electrochemical device is fully discharged and disassembled, the anode meets at least one of conditions (4) to (6): (4) in the first oriented particles, particles having a particle size of less than 10 μm account for 62.5%-87.7%, and particles having a particle size of 10 μm-35 μm account for 12.3%-37.5%; (5) in the second oriented particles, particles having a particle size of less than 10 Inn account for 2.1%-3.9%, particles having a particle size of 10 μm-35 μm account for 21.5%-40.2%, and particles having a particle size of greater than 35 μm account for 55.9%-76.4%; or (6) in the third oriented particles, particles having a particle size of less than 10 μm account for 90.0% or more. ### Claim 15 (depends on 10) The electrochemical device according to claim 10, wherein the first oriented particles meet at least one of conditions (a) to (d): (a) 0°—≤θ1≤18°; (b) an area of the first oriented particles is 9%-23% of a cross sectional area of the anode active material layer; (c) in the first oriented particles, particles having a particle size of less than 10 μm account for 71.0%-93.0%; and (d) in the first oriented particles, particles having a particle size between 10 μm and 35 μm account for 7.0%-29.0%. ### Claim 16 (depends on 10) The electrochemical device according to claim 10, wherein 25°<θ2≤70°; and the second oriented particles have an area ratio relative to the cross sectional area of the anode active material layer higher than that of the first oriented particles. ### Claim 17 (depends on 10) The electrochemical device according to claim 10, wherein an area of the second oriented particles is 37%-55% of a cross sectional area of the anode active material layer. ### Claim 18 (depends on 10) The electrochemical device according to claim 10, wherein in the second oriented particles, particles having a particle size between 10 μm and 35 μm account for 22.0%-41.0% and particles having a particle size less than 10 μm account for 3.5%-5.6%. ### Claim 19 (depends on 12) The electrochemical device according to claim 12, wherein in the third oriented particles, particles having a particle size of less than 10 μm account for 90.0% or more. ### Claim 20 An electrochemical device, comprising an anode, the anode comprising a current collector and an anode active material layer on the current collector; wherein, the anode active material layer comprises first oriented particles having a first tilt angle θ1 inclined with respect to a direction of the current collector, and second oriented particles having a second tilt angle θ2 inclined with respect to the direction of the current collector, wherein the first tilt angle θ1 and the second tilt angle θ2 are different and 0°≤θ1≤20° and 20°<θ2≤70° and the anode has a compacted density of 1.70 g/cm3-1.90 g/cm3.