# US 10,121,606 B2 · Method of manufacturing an electrode for an energy storage device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,121,606 B2 - Document ID: US10121606B2 - Status: Granted - Kind: B2 - Application number: 15/151,088 - Filed: 2016-05-10 - Published: 2016-09-01 - Granted: 2018-11-06 - Earliest claimed: 2010-06-25 - Assignees: Senju Metal Industry Co., Ltd. - Applicants: Senju Metal Industry Co., Ltd. - Inventors: Katsuji Nakamura; Kaichi Tsuruta; Yuji Ozaki; Shigeaki Watarai; Hidenori Takagi; Yutaka Ohori - Web page: https://patentgrep.com/patent/US10121606B2 ## CPC - C23C 18/1651: {Two or more layers only obtained by electroless plating} - C23C 18/1653: {Two or more layers with at least one layer obtained by electroless plating and one layer obtained by electroplating} - C23C 18/1827: {only one step pretreatment} - C23C 18/31: Coating with metals - C23C 18/32: Coating with nickel, cobalt or mixtures thereof with phosphorus or boron (C23C18/50 takes precedence) - C23C 18/48: Coating with alloys - C23C 18/54: Contact plating, i.e. electroless electrochemical plating - C25D 3/12: of nickel or cobalt - C25D 3/22: of zinc - C25D 3/30: of tin - C25D 3/565: {containing more than 50% by weight of zinc} - C25D 3/60: containing more than 50% by weight of tin - C25D 5/12: at least one layer being of nickel or chromium - C25D 5/44: Aluminium - H01B 1/023: {Alloys based on aluminium} - H01B 13/32: Filling or coating with impervious material - H01G 11/06: with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC] - H01G 11/24: characterised by structural features of the materials making up or comprised in the electrodes, e.g. form, surface area or porosity; characterised by the structural features of powders or particles used therefor - H01G 11/30: characterised by their material - H01G 11/50: specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation - H01G 11/66: Current collectors - H01M 50/531: Electrode connections inside a battery casing - H01M 50/534: characterised by the material of the leads or tabs - C23C 18/36: using hypophosphites - C23C 18/52: using reducing agents for coating with metallic material not provided for in a single one of groups C23C18/32 - C23C18/50 - H01M 2004/028: {Positive electrodes} - Y02E 60/10: Energy storage using batteries - Y02E 60/13: Energy storage using capacitors - Y10T 29/49147: Assembling terminal to base - C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04) - C25D: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) - 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) - 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 - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract An electrode for an energy storage device including a Zn layer or Zn alloy layer, a Ni layer, and a Sn layer or Sn alloy layer formed by plating on a connecting terminal part of a positive electrode composed of Al so that the resistance value at the contacting point is reduced and the voltage of the energy storage device can be effectively supplied without any drop. Accordingly, this electrode can be soldered to a Cu negative electrode, which is composed of metal that is different species from Al, through a Sn layer or a Sn alloy layer so that jointing strength of the Al positive electrode and the Cu negative electrode can be enhanced. The contacting area is increased in comparison with the conventional jointing by spot-welding or conventional fastening by a bolt so that the resistance value at the contacting point is reduced. ## Claims ### Claim 1 A method of manufacturing an electrode for an energy storage device, the method comprising: degreasing a surface of a positive electrode containing Al by using an organic solvent; thereafter, etching the surface of the positive electrode degreased in the step of degreasing, by using an etchant; thereafter, forming a Zn plating on the surface of the positive electrode etched in the step of etching, by using a liquid zincate; thereafter, forming a Ni plating on a surface of the Zn plating formed in the step of forming a Zn plating, by using a Ni plating solution; and thereafter, forming a Sn plating on a surface of the Ni plating formed in the step of forming a Ni plating, by using a Sn plating solution. ### Claim 2 (depends on 1) The method of manufacturing an electrode for an energy storage device according to claim 1 wherein the step of forming a Zn plating on the surface of the positive electrode by using a liquid zincate is performed at least two times. ### Claim 3 (depends on 2) The method of manufacturing an electrode for an energy storage device according to claim 2 wherein the step of forming a Zn plating on the surface of the positive electrode by using a liquid zincate includes forming a layer of Zn or Zn alloy having a thickness of 0.05 through 0.1 μm. ### Claim 4 (depends on 1) The method of manufacturing an electrode for an energy storage device according to claim 1 wherein the step of forming a Zn plating on the surface of the positive electrode by using a liquid zincate includes forming a layer of Zn or Zn alloy having a thickness of 0.05 through 0.1 μm.