# US 9,040,182 B2 · Power storage device cell, manufacturing method therefor, and electric storage device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,040,182 B2 - Document ID: US9040182B2 - Status: Granted - Kind: B2 - Application number: 13/512,056 - Filed: 2010-12-27 - Published: 2012-11-01 - Granted: 2015-05-26 - Earliest claimed: 2010-01-28 - Assignees: Mitsubishi Electric Corporation - Applicants: Shigeru Aihara; Kenro Mitsuda; Makiko Kise; Daigo Takemura - Inventors: Shigeru Aihara; Kenro Mitsuda; Makiko Kise; Daigo Takemura - Web page: https://patentgrep.com/patent/US9040182B2 ## CPC - H01M 4/133: Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx - H01G 11/06: with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC] - H01G 11/32: Carbon-based - H01G 11/50: specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation - H01G 11/86: specially adapted for electrodes (carbonisation or activation of carbon for the manufacture of electrodes H01G11/34) - H01M 4/587: for inserting or intercalating light metals - H01M 4/70: characterised by shape or form - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 10/0585: of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators - H01M 10/4264: {with capacitors} - Y02E 60/10: Energy storage using batteries - Y02E 60/13: Energy storage using capacitors - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - Y10T 29/49108: Electric battery cell making - 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 - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A power storage device cell is configured to include a capacitor positive electrode, a lithium positive electrode, and a common negative electrode in which electrode layers are formed on a collector foil in which penetration holes are formed, and such that the capacitor positive electrode and the lithium positive electrode are directly connected; each of the electrode layers of the common negative electrode is formed of a carbon-based material in which graphite particles and hard carbon particles are mixed, and the proportion of the hard carbon particles in the carbon-based material is from 5% by weight to 70% by weight. ## Claims ### Claim 1 A power storage device cell comprising: a first electrode in which a first electrode layer including activated-carbon fine particles is formed on one side of a first collector foil; a second electrode in which a second electrode layer including lithium-containing metal compound particles is formed on one side of a second collector foil; a third electrode in which a third electrode layer is formed on at least one side of a third collector foil; a first separator formed of a porous insulative film; and a second separator formed of a porous insulative film, wherein penetration holes are formed in the third collector foil; a capacitor whose negative electrode is the third electrode is formed by inserting the first separator between the first electrode layer and one side of the third electrode; a lithium ion battery whose negative electrode common to the capacitor is the third electrode is formed by inserting the second separator between the second electrode layer and the other side of the third electrode; the first electrode and the second electrode are directly connected; the third electrode layer is formed of a carbon-based material in which graphite particles and hard carbon particles are mixed, and the proportion of the hard carbon particles in the carbon-based material is from 5% by weight to 70% by weight; and portions of the third electrode layer are provided on both sides of the third collector foil, and the proportion of hard carbon particles included in the third electrode layer at the side of the first separator is higher than the proportion of hard carbon particles included in the third electrode layer at the side of the second separator. ### Claim 2 (depends on 1) The power storage device cell according to claim 1, wherein the lithium-containing metal compound in the second electrode layer is olivine-type lithium iron phosphate. ### Claim 3 (depends on 1) The power storage device cell according to claim 1, wherein in the third electrode, through-holes are provided that penetrate the third electrode in the thickness direction thereof. ### Claim 4 (depends on 3) The power storage device cell according to claim 3, wherein the through-holes include a first through-hole that becomes narrower in the direction from one side of the third electrode to the other side thereof and a second through-hole that becomes narrower in the direction from the other side of the third electrode to the one side thereof. ### Claim 5 (depends on 3) The power storage device cell according to claim 3, wherein each said through-hole is filled with a particle material. ### Claim 6 (depends on 5) The power storage device cell according to claim 5, wherein the particle material is a material for forming an electrode layer on one side of the third electrode. ### Claim 7 (depends on 6) The power storage device cell according to claim 6, wherein the particle material is a material for forming an electrode layer, of the third electrode, that is situated at the first separator. ### Claim 8 (depends on 3) A manufacturing method for the power storage device cell according to claim 3, comprising: forming the first electrode having the first electrode layer, by coating the first collector foil with a paste in which a binder is added to activated-carbon fine particles; forming the second electrode having the second electrode layer, by coating the second collector foil with a paste in which a conductive assistant and a binder are added to a lithium-containing metal compound; forming the third electrode having the third electrode layer, by coating the third collector foil with a paste in which a binder is added to a carbon-based material; and assembling the power storage device cell by laminating the first electrode, the first separator, the third electrode, the second separator, and the second electrode in that order, wherein in the third electrode, before the penetrating through-holes are formed in the third collector foil, a paste is applied to the third collector foil, and then protrusions are pressed against the third collector foil so as to form the penetrating through-holes. ### Claim 9 (depends on 5) A manufacturing method for the power storage device cell according to claim 5, comprising: forming the first electrode having the first electrode layer, by coating the first collector foil with a paste in which a conductive assistant and a binder are added to activated-carbon fine particles; forming the second electrode having the second electrode layer, by coating the second collector foil with a paste in which a conductive assistant and a binder are added to a lithium-containing metal compound; forming the third electrode having the third electrode layer, by coating the third collector foil with a paste in which a binder is added to a carbon-based material; and assembling the power storage device cell by laminating the first electrode, the first separator, the third electrode, the second separator, and the second electrode in that order, wherein in the third electrode, before the penetration holes are formed in the third collector foil, a paste is applied to one side of the third collector foil and the third collector foil is dried, protrusions are pressed against the third collector foil in the direction starting from the other side thereof so as to form the penetrating through-holes, the other side in which the penetrating through-holes are formed is coated with a paste and dried, and then the penetrating through-holes are filled with the particle material. ### Claim 10 (depends on 1) An electric storage device, wherein each of the first electrode and the second electrode is a hybrid electrode in which the first electrode layer is formed on one side of a collector foil and the second electrode layer is formed on the other side thereof; and there is included a laminated body having a main laminate unit in which a plurality of the power storage device cells according to claim 1 are laminated such that the third electrode, the first separator, the hybrid electrode, and the second separator are repeatedly laminated in that order. ### Claim 11 (depends on 10) The electric storage device according to claim 10, wherein the lamination is implemented in such a way that both end portions of the laminated body are the third electrodes. ### Claim 12 (depends on 1) An electric storage device, wherein each of the first electrode and the second electrode is a hybrid electrode in which the first electrode layer is formed on one side of a collector foil and the second electrode layer is formed on the other side thereof; and the power storage device cell according to claim 1 is configured such that the third electrode, the first separator, the hybrid electrode, and the second separator are laminated in that order and then the laminated unit is wound.