# US 12,218,339 B2 · Method for manufacturing doped electrode and method for manufacturing power storage device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,218,339 B2 - Document ID: US12218339B2 - Status: Granted - Kind: B2 - Application number: 17/638,557 - Filed: 2020-06-25 - Published: 2022-09-22 - Granted: 2025-02-04 - Earliest claimed: 2019-08-30 - Assignees: Musashi Energy Solutions Co., Ltd. - Applicants: Musashi Energy Solutions Co., Ltd. - Inventors: Hirobumi Suzuki; Kenji Kojima; Masaya Naoi; Nobuo Ando; Hiroki Yakushiji; Kazunari Aita; Masahiro Yamamoto - Web page: https://patentgrep.com/patent/US12218339B2 ## CPC - H01M 4/139: Processes of manufacture - H01G 11/06: with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC] - H01G 11/50: specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation - H01G 11/84: Processes for the manufacture of hybrid or EDL capacitors, or components thereof - H01G 11/86: specially adapted for electrodes (carbonisation or activation of carbon for the manufacture of electrodes H01G11/34) - H01M 4/0404: {by coating on electrode collectors} - H01M 4/0445: {Forming after manufacture of the electrode, e.g. first charge, cycling} - H01M 4/0459: {Electrochemical doping, intercalation, occlusion or alloying} - H01M 4/13: Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 10/058: Construction or manufacture - 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 - H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A doped electrode is manufactured by an electrode manufacturing method. The doped electrode includes an active material doped with an alkali metal. In the electrode manufacturing method, a dope solution is brought into contact with an electrode. The electrode includes a current collector and an active material layer. The active material layer is formed on a surface of the current collector and includes the active material. The dope solution includes an alkali metal ion and flows. In the electrode manufacturing method, for example, the alkali metal is electrically doped to the active material using a counter electrode member arranged to face the electrode. ## Claims ### Claim 1 An electrode manufacturing method for manufacturing a doped electrode comprising an active material doped with an alkali metal, the method comprising: doping an alkali metal to an active material in a state that a dope solution is in contact with an electrode, the dope solution flowing and comprising an alkali metal ion, wherein the electrode comprises a current collector and an active material layer, and wherein the active material layer is formed on a surface of the current collector and comprises the active material; wherein the alkali metal is electrically doped to the active material using a counter electrode member arranged to face the electrode, and wherein the dope solution is flowed by discharging the dope solution from a nozzle located between the electrode and the counter electrode member. ### Claim 2 (depends on 1) The method of claim 1, wherein the alkali metal is doped to the active material in a state that the dope solution is flowed between the electrode and the counter electrode member. ### Claim 3 (depends on 1) The method of claim 1, wherein a current density I per an area of the electrode is in a range of from 5 to 500 mA/cm2. ### Claim 4 (depends on 3) The method of claim 3, wherein the electrode has a belt shape extending in a longitudinal direction, and wherein the electrode is moved to the longitudinal direction in the dope solution when the alkali metal is doped to the active material. ### Claim 5 (depends on 4) The method of claim 4, wherein a flow direction of the dope solution is approximately parallel to a surface of the electrode when the alkali metal is doped to the active material. ### Claim 6 (depends on 5) The method of claim 5, wherein the flow direction of the dope solution is approximately orthogonal to a predetermined direction when the alkali metal is doped to the active material. ### Claim 7 (depends on 1) The method of claim 1, wherein a temperature of the dope solution is in a range of from 40 to 100° C. when the alkali metal is doped to the active material. ### Claim 8 (depends on 1) The method of claim 1, wherein an electrolyte concentration of the dope solution is in a range of from 0.8 to 5.0 mol/L. ### Claim 9 (depends on 1) The method of claim 1, wherein a solvent of the dope solution is one or more selected from a group consisting of a carbonate-based solvent, an ester-based solvent, an ether-based solvent, a hydrocarbon-based solvent, a ketone-based solvent, a nitrile-based solvent, a sulfur-comprising solvent and an amide-based solvent. ### Claim 10 A method for manufacturing a power storage device including an electrode cell, the method comprising: doping an alkali metal to an active material by bringing a dope solution in contact with a negative electrode, the dope solution flowing and comprising an alkali metal ion, the negative electrode including a negative current collector and a negative electrode active material layer, the negative electrode active material layer formed on a surface of the negative current collector, the negative electrode active material layer comprising the active material; wherein the alkali metal is electrically doped to the active material using a counter electrode member arranged to face the negative electrode; wherein the dope solution is flowed by discharging the dope solution from a nozzle located between the negative electrode and the counter electrode member; and after the alkali metal is doped to the active material, stacking the negative electrode and an electrode different from the negative electrode to form the electrode cell. ### Claim 11 An electrode manufacturing system configured for manufacturing a doped electrode comprising an active material doped with an alkali metal by performing, on an electrode, a process of doping an alkali metal to an active material, the electrode comprising a current collector and an active material layer, the active material layer formed on a surface of the current collector and comprising the active material, the system comprising: a dope bath storing a dope solution comprising an alkali metal ion to carry out the process; a flow section that causes the dope solution stored in the dope bath to flow; and wherein the alkali metal is electrically doped to the active material using a counter electrode member arranged to face the electrode, and wherein the dope solution is flowed by discharging the dope solution from a nozzle located between the electrode and the counter electrode member. ### Claim 12 (depends on 1) A doped electrode, manufactured by a method of claim 1.