# US 2019/0356010 A1 · Flow battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0356010 A1 - Document ID: US20190356010A1 - Status: Published application - Kind: A1 - Application number: 16/418,350 - Filed: 2019-05-21 - Published: 2019-11-21 - Earliest claimed: 2018-05-17 - Assignees: Panasonic Intellectual Property Management Co., Ltd. - Applicants: Panasonic Intellectual Property Management Co., Ltd. - Inventors: YUKA OKADA; SHINJI ANDO; SHO SHIBATA - Web page: https://patentgrep.com/patent/US20190356010A1 ## CPC - H01M 8/188: {by recharging of redox couples containing fluids; Redox flow type batteries} - H01B 1/06: mainly consisting of other non-metallic substances - H01B 1/12: organic substances {(organic macromolecular compounds or compositions C08)} - H01M 8/0221: Organic resins; Organic polymers - H01M 8/04186: of liquid-charged or electrolyte-charged reactants - H01M 8/1027: having carbon, oxygen and other atoms, e.g. sulfonated polyethersulfones [S-PES] - H01M 8/1032: having sulfur, e.g. sulfonated-polyethersulfones [S-PES] - H01M 8/1048: Ion-conducting additives, e.g. ion-conducting particles, heteropolyacids, metal phosphate or polybenzimidazole with phosphoric acid - H01M 8/1067: characterised by their physical properties, e.g. porosity, ionic conductivity or thickness - H01M 8/18: Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells - H01M 12/08: composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type - Y02E 60/50: Fuel cells - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - 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}) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract The flow battery according to the present disclosure comprises a first non-aqueous liquid, a first electrode in contact with the first non-aqueous liquid, a second electrode which serves as a counter electrode of the first electrode, and a lithium ion conductive film which separates the first electrode and the second electrode from each other. The lithium ion conductive film is formed of a polymer base material containing an ionic polymer. The polymer base material has an interspace which communicates with an outside thereof. The polymer base material is formed of at least one kind of resin selected from the group consisting of a thermosetting resin and a thermoplastic resin which has a melting point of not less than 150 degrees Celsius. The ionic polymer is contained in an inside of the interspace of the polymer base material. The ionic polymer is represented by where n1 and n2 are, each independently, natural numbers of not less than 1, or where m1, m2, n1, and n2 are, each independently, natural numbers of not less than 1. The flexible lithium ion conductive film having a low swelling property when in contact with a non-aqueous liquid. ## Claims ### Claim 1 A flow battery, comprising: a first non-aqueous liquid; a first electrode in contact with the first non-aqueous liquid; a second electrode which serves as a counter electrode of the first electrode; and a lithium ion conductive film which separates the first electrode and the second electrode from each other, wherein the lithium ion conductive film is formed of a polymer base material containing an ionic polymer; the polymer base material has an interspace which communicates with an outside thereof; the polymer base material is formed of at least one kind of resin selected from the group consisting of a thermosetting resin and a thermoplastic resin which has a melting point of not less than 150 degrees Celsius; the ionic polymer is contained in an inside of the interspace of the polymer base material; and the ionic polymer is represented by where n1 and n2 are, each independently, natural numbers of not less than 1, or where m1, m2, n1, and n2 are, each independently, natural numbers of not less than 1. ### Claim 2 (depends on 1) The flow battery according to claim 1, wherein the thermoplastic resin which has a melting point of not less than 150 degrees Celsius is at least one selected from the group consisting of polyphenylene sulfide and a liquid crystal polymer. ### Claim 3 (depends on 1) The flow battery according to claim 1, wherein the thermosetting resin is aromatic polyimide which does not have a fluorine atom. ### Claim 4 (depends on 1) The flow battery according to claim 1, wherein the polymer base material is at least one kind of a base material selected from the group consisting of a porous film, a non-woven fabric, and a mesh. ### Claim 5 (depends on 1) The flow battery according to claim 1, wherein the first non-aqueous liquid contains, as a solvent, a compound having at least one selected from the group consisting of a carbonate group or an ether bond. ### Claim 6 (depends on 1) The flow battery according to claim 1, wherein the first non-aqueous liquid contains, as a solvent, at least one selected from the group consisting of propylene carbonate, ethylene carbonate, dimethyl carbonate, ethyl methyl carbonate, and diethyl carbonate. ### Claim 7 (depends on 1) The flow battery according to claim 1, wherein the first non-aqueous liquid contains, as a solvent, at least one selected from the group consisting of dimethoxyethane, dibutoxyethane, diglyme, triglyme, tetraglyme, tetrahydrofuran, 2-methyltetrahydrofuran, 2,5-dimethyltetrahydrofuran, 1,3-dioxolane, and 4-methyl-1,3-dioxolane. ### Claim 8 (depends on 1) The flow battery according to claim 1, further comprising: a first redox material; a first active material; and a first circulation mechanism capable of circulating the first non-aqueous liquid between the first electrode and the first active material; wherein the first non-aqueous liquid contains the first redox material; the first active material is insoluble in the first liquid; the first redox material is oxidized or reduced on the first electrode; and the first redox material is oxidized or reduced with the first active material. ### Claim 9 (depends on 8) The flow battery according to claim 8, further comprising: a second liquid; a second redox material; a second active material; and a second circulation mechanism capable of circulating the second liquid between the second electrode and the second active material; wherein the second liquid contains the second redox material; the second active material is insoluble in the second liquid; the second electrode is in contact with the second liquid; the second redox material is oxidized or reduced on the second electrode; and the second redox material is oxidized or reduced with the second active material.