# US 2019/0379052 A1 · Resin for energy device electrode, composition for forming energy device electrode, energy device electrode, and energy device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0379052 A1 - Document ID: US20190379052A1 - Status: Published application - Kind: A1 - Application number: 16/488,318 - Filed: 2018-02-27 - Published: 2019-12-12 - Earliest claimed: 2017-02-27 - Assignees: Hitachi Chemical Company, Ltd. - Applicants: Hitachi Chemical Company, Ltd. - Inventors: Shunsuke NAGAI; Hiroki KUZUOKA; Kenji SUZUKI; Nobuyuki OGAWA - Web page: https://patentgrep.com/patent/US20190379052A1 ## CPC - H01M 4/622: {being polymers} - C08F 220/26: Esters containing oxygen in addition to the carboxy oxygen - C08F 220/286: {and containing polyethylene oxide in the alcohol moiety, e.g. methoxy polyethylene glycol (meth)acrylate} - C08F 220/44: Acrylonitrile - C08F 301/00: Macromolecular compounds not provided for in groups C08F10/00 - C08F299/00 - H01M 4/13: Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof - H01M 4/131: Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx - 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 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - C08F 220/281: {and containing only one oxygen, e.g. furfuryl (meth)acrylate or 2-methoxyethyl (meth)acrylate} - C08F 220/282: {and containing two or more oxygen atoms} - C08F 220/285: {and containing a polyether chain in the alcohol moiety} - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A resin for an energy device electrode contains a structural unit derived from a nitrile group-containing monomer; and a structural unit derived from a monomer represented by the following Formula (I), wherein the resin does not contain a structural unit that is derived from a carboxy group-containing monomer and that contains a carboxy group, or the resin has a ratio of a structural unit that is derived from a carboxy group-containing monomer and that contains a carboxy group of 0.01 moles or less with respect to 1 mole of the structural unit derived from a nitrile group-containing monomer, and a ratio of the structural unit derived from a nitrile group-containing monomer to a total of structural units derived from each monomer is from 90% by mole to less than 100%. ## Claims ### Claim 1 A resin for an energy device electrode, the resin comprising: a structural unit derived from a nitrile group-containing monomer; and a structural unit derived from a monomer represented by the following Formula (I), wherein the resin does not comprise a structural unit that is derived from a carboxy group-containing monomer and that comprises a carboxy group, or the resin has a ratio of a structural unit that is derived from a carboxy group-containing monomer and that comprises a carboxy group of 0.01 moles or less with respect to 1 mole of the structural unit derived from a nitrile group-containing monomer, and a ratio of the structural unit derived from a nitrile group-containing monomer to a total of structural units derived from each monomer is from 90% by mole to less than 100%: wherein, in Formula (I), R1 represents a hydrogen atom or a methyl group, R2 represents a monovalent hydrocarbon group, and n represents an integer from 1 to 50. ### Claim 2 (depends on 1) The resin for an energy device electrode according to claim 1, wherein a ratio of the structural unit derived from a monomer represented by Formula (I) with respect to 1 mole of the structural unit derived from a nitrile group-containing monomer is from 0.001 moles to 0.2 moles. ### Claim 3 (depends on 1) The resin for an energy device electrode according to claim 1, further comprising a structural unit derived from a monomer represented by the following Formula (II): wherein, in Formula (II), R3 represents a hydrogen atom or a methyl group, and R4 represents an alkyl group having from 4 to 100 carbon atoms. ### Claim 4 (depends on 3) The resin for an energy device electrode according to claim 3, wherein a ratio of the structural unit derived from a monomer represented by Formula (II) with respect to 1 mole of the structural unit derived from a nitrile group-containing monomer is from 0.001 moles to 0.2 moles. ### Claim 5 (depends on 1) The resin for an energy device electrode according to claim 1, wherein the nitrile group-containing monomer comprises acrylonitrile. ### Claim 6 (depends on 1) The resin for an energy device electrode according to claim 1, wherein R2 in the monomer represented by Formula (I) is an alkyl group having from 1 to 12 carbon atoms or a phenyl group. ### Claim 7 (depends on 1) The resin for an energy device electrode according to claim 1, wherein n in the monomer represented by Formula (I) is an integer from 2 to 50. ### Claim 8 (depends on 1) The resin for an energy device electrode according to claim 1, wherein the monomer represented by Formula (I) comprises methoxytriethylene glycol acrylate. ### Claim 9 (depends on 1) A composition for forming an energy device electrode, the composition comprising the resin for an energy device electrode according to claim 1. ### Claim 10 (depends on 9) The composition for forming an energy device electrode according to claim 9, further comprising a positive electrode active material comprising a lithium-containing metal composite oxide comprising lithium and nickel and having a ratio of nickel to metal, excluding lithium, of 50% by mole or more. ### Claim 11 (depends on 10) The composition for forming an energy device electrode according to claim 10, wherein the positive electrode active material comprises a compound represented by the following Formula (III): LiaNibCocMdO2+e Formula (III) wherein, in Formula (III), M is at least one selected from the group consisting of Al, Mn, Mg and Ca, a, b, c, d, and e satisfy 0.2≤a≤1.2, 0.5≤b≤0.9, 0.05≤c≤0.4, 0≤d≤0.2, and −0.2≤e≤0.2, respectively, and b+c+d=1. ### Claim 12 (depends on 9) An energy device electrode, comprising: a current collector; and an electrode mixture layer provided on at least one surface of the current collector and comprising the composition for forming an energy device electrode according to claim 9. ### Claim 13 (depends on 12) An energy device comprising the energy device electrode according to claim 12. ### Claim 14 (depends on 13) The energy device according to claim 13, which is a lithium ion secondary battery.