Patents by Inventor Shuhei SAWA
Shuhei SAWA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240154170Abstract: A nonaqueous electrolyte secondary battery including: a positive electrode; a negative electrode; and a nonaqueous electrolyte solution is provided. The negative electrode contains a graphite and a metal compound-based material containing Si or a Si metal oxide, and the nonaqueous electrolyte solution includes at least one compound of Formula (A) and Formula (B): wherein R1 to R3 each independently represent an alkyl group having 1 to 10 carbon atoms which optionally has a substituent, or an aryl group having 6 to 18 carbon atoms which optionally has a substituent, and X represents hydrogen, an alkenyl group having 2 to 10 carbon atoms or an alkynyl group having 2 to 10 carbon atoms; and R4 to R6 each independently represent a hydrocarbon group having 1 to 20 carbon atoms which optionally has a substituent, Y represents S, NH or NR7, and R7 represents a hydrocarbon group having 1 to 20 carbon atoms.Type: ApplicationFiled: January 16, 2024Publication date: May 9, 2024Applicants: Mitsubishi Chemical Corporation, MU IONIC SOLUTIONS CORPORATIONInventors: Atsushi WATARAI, Eiji NAKAZAWA, Shuhei SAWA
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Publication number: 20230395857Abstract: An object is to provide a non-aqueous electrolyte solution that can improve the capacity deterioration and gas generation associated with the high-temperature storage of non-aqueous electrolyte batteries. A further object is to provide a non-aqueous electrolyte battery that uses this non-aqueous electrolyte solution. These objects can be achieved by using a non-aqueous electrolyte solution that incorporates, in prescribed contents, (A) a compound having at least two isocyanate groups per molecule and (B) a compound of formula (3): LiCnF2n+1SO3??(3) wherein n is an integer from 0 to 4.Type: ApplicationFiled: August 16, 2023Publication date: December 7, 2023Applicants: MITSUBISHI CHEMICAL CORPORATION, MU IONIC SOLUTIONS CORPORATIONInventors: Shuhei SAWA, Minoru KOTATO, Kunihisa SHIMA, Yasuyuki SHIGEMATSU, Masamichi ONUKI, Kanako TAKIGUCHI
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Patent number: 11791499Abstract: Disclosed herein is a non-aqueous electrolyte secondary battery containing at least a positive electrode capable of the absorbing and releasing of a lithium ion, a negative electrode capable of the absorbing and releasing of the lithium ion, and a non-aqueous electrolyte solution containing a non-aqueous solvent and an electrolyte dissolved in the non-aqueous solvent, where the negative electrode contains a carbonaceous material, and the non-aqueous electrolyte solution contains, in addition to an electrolyte and a non-aqueous solvent: (A) a compound having at least two isocyanate groups per molecule, (B) a monofluorophosphate salt or a difluorophosphate salt, at from 0.001 mass % or more to 5 mass % or less in the non-aqueous electrolyte solution.Type: GrantFiled: November 12, 2021Date of Patent: October 17, 2023Assignees: MITSUBISHI CHEMICAL CORPORATION, MU IONIC SOLUTIONS CORPORATIONInventors: Shuhei Sawa, Minoru Kotato, Kunihisa Shima, Yasuyuki Shigematsu, Masamichi Onuki, Kanako Takiguchi
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Publication number: 20220328878Abstract: Provided are: a non-aqueous electrolyte solution that can suppress the room-temperature and/or low-temperature discharge resistance growth of an energy device; and an energy device that includes the non-aqueous electrolyte solution. A non-aqueous electrolyte solution for an energy device that comprises a positive electrode and a negative electrode. The non-aqueous electrolyte solution is characterized by containing an electrolyte, a non-aqueous solvent, a linear sulfonic acid ester, and at least one compound selected from the group that consists of fluorosulfonates, monofluorophosphates, difluorophosphates, imide salts, and oxalates, the mass ratio of the amount of the linear sulfonic acid ester to the amount of the at least one compound selected from the group that consists of fluorosulfonates, monofluorophosphates, difluorophosphates, imide salts, and oxalates being within a specific range.Type: ApplicationFiled: June 10, 2022Publication date: October 13, 2022Applicants: Mitsubishi Chemical Corporation, MU Ionic Solutions CorporationInventors: Shuhei Sawa, Daisuke Kawakami, Koichi Nishio
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Publication number: 20220149435Abstract: Provided is a nonaqueous electrolyte solution which can provide an energy device in which the initial discharge resistance is reduced and the gas generation during storage is inhibited. This nonaqueous electrolyte solution for an energy device including a positive electrode and a negative electrode is characterized by containing a compound represented by the following Formula (1) together with an electrolyte and a nonaqueous solvent: (wherein, X represents an optionally substituted unsaturated hydrocarbon group and at least one unsaturated carbon-carbon bond; Y represents an organic group, which is constituted by atoms selected from the group consisting of a carbon atom, a hydrogen atom, an oxygen atom, a sulfur atom, and a phosphorus atom; R1 represents a hydrogen atom, a halogen atom, or an unsubstituted or halogen atom-substituted hydrocarbon group; R2 represents an unsubstituted or halogen atom-substituted hydrocarbon group; and n represents an integer of 1 to 3).Type: ApplicationFiled: January 26, 2022Publication date: May 12, 2022Applicants: Mitsubishi Chemical Corporation, MU Ionic Solutions CorporationInventors: Shuhei Sawa, Koichi Nishio, Takeshi Nakamura, Kaho Tamai
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Publication number: 20220069351Abstract: Disclosed herein is a non-aqueous electrolyte secondary battery containing at least a positive electrode capable of the absorbing and releasing of a lithium ion, a negative electrode capable of the absorbing and releasing of the lithium ion, and a non-aqueous electrolyte solution containing a non-aqueous solvent and an electrolyte dissolved in the non-aqueous solvent, where the negative electrode contains a carbonaceous material, and the non-aqueous electrolyte solution contains, in addition to an electrolyte and a non-aqueous solvent: (A) a compound having at least two isocyanate groups per molecule, (B) a monofluorophosphate salt or a difluorophosphate salt, at from 0.001 mass % or more to 5 mass % or less in the non-aqueous electrolyte solution.Type: ApplicationFiled: November 12, 2021Publication date: March 3, 2022Applicants: MITSUBISHI CHEMICAL CORPORATION, MU IONIC SOLUTIONS CORPORATIONInventors: Shuhei SAWA, Minoru KOTATO, Kunihisa SHIMA, Yasuyuki SHIGEMATSU, Masamichi ONUKI, Kanako TAKIGUCHI
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Patent number: 11205802Abstract: Disclosed herein is a non-aqueous electrolyte solution containing, in addition to an electrolyte and a non-aqueous solvent, (A) a compound having at least two isocyanate groups per molecule, and (B) LiN(FSO2)2.Type: GrantFiled: October 2, 2019Date of Patent: December 21, 2021Assignees: MITSUBISHI CHEMICAL CORPORATION, MU IONIC SOLUTIONS CORPORATIONInventors: Shuhei Sawa, Minoru Kotato, Kunihisa Shima, Yasuyuki Shigematsu, Masamichi Onuki, Kanako Takiguchi
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Patent number: 10777850Abstract: A nonaqueous electrolytic solution, containing an electrolyte, a nonaqueous solvent and an aromatic carboxylate ester of formula (1): wherein A1 is an optionally substituted aryl group, n1 is an integer of 1 or greater, R2 and R3 are a hydrogen atom, a halogen atom or an optionally substituted hydrocarbon group having 1 to 12 carbon atoms, a1 is an integer of 1 or 2, and when a1 is 1, R1 is an optionally substituted hydrocarbon group having 1 to 12 carbon atoms, a1 is 2, R1 is an optionally substituted hydrocarbon group having 1 to 12 carbon atoms, n1 is 1, at least one of R2 and R3 is an optionally substituted hydrocarbon group having 1 to 12 carbon atoms, and n1 is 2 and R2s and R3s are all hydrogen atoms, R1 is an optionally substituted aliphatic hydrocarbon group having 1 to 12 carbon atoms.Type: GrantFiled: October 9, 2018Date of Patent: September 15, 2020Assignee: Mitsubishi Chemical CorporationInventors: Shuhei Sawa, Takashi Fujii, Kanako Ito, Koji Fukamizu, Ryo Yamaguchi, Hiromu Watanabe
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Publication number: 20200220222Abstract: Provided is a nonaqueous electrolyte secondary battery including: a positive electrode; a negative electrode; and a nonaqueous electrolyte solution, wherein the positive electrode includes a metal oxide represented by the following composition formula (14): Lia101Nib101Coc101Md101O2 (14), where a101, b101, c101 and d101 represent numerical values of 0.90?a101?1.10, 0.50?b101?0.98, 0.01?c101<0.50 and 0.01?d101<0.50, satisfying b101+c101+d101=1; and M represents at least one element selected from the group consisting of Mn, Al, Mg, Zr, Fe, Ti, and Er, and the nonaqueous electrolyte solution includes a compound represented by the following Formula (C): where R101 to R103 each independently represent a C1-10 alkyl group optionally having a substituent, or a C6-18 aryl group optionally having a substituent; and X represents hydrogen, a C2-10 alkenyl group, or a C2-10 alkynyl group.Type: ApplicationFiled: March 20, 2020Publication date: July 9, 2020Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Atsushi WATARAI, Eiji NAKAZAWA, Shuhei SAWA
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Publication number: 20200036042Abstract: Disclosed herein is a non-aqueous electrolyte solution containing, in addition to an electrolyte and a non-aqueous solvent, (A) a compound having at least two isocyanate groups per molecule, and (B) LiN(FSO2)2.Type: ApplicationFiled: October 2, 2019Publication date: January 30, 2020Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Shuhei Sawa, Minoru Kotato, Kunihisa Shima, Yasuyuki Shigematsu, Masamichi Onuki, Kanako Takiguchi
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Patent number: 10476106Abstract: An object is to provide a non-aqueous electrolyte solution that can improve the capacity deterioration and gas generation associated with the high-temperature storage of non-aqueous electrolyte batteries. A further object is to provide a non-aqueous electrolyte battery that uses this non-aqueous electrolyte solution. These objects can be achieved by using a non-aqueous electrolyte solution that incorporates, in prescribed contents, (A) a compound having at least two isocyanate groups per molecule and a compound having at least two cyano groups per molecule.Type: GrantFiled: January 8, 2016Date of Patent: November 12, 2019Assignee: Mitsubishi Chemical CorporationInventors: Shuhei Sawa, Minoru Kotato, Kunihisa Shima, Yasuyuki Shigematsu, Masamichi Onuki, Kanako Takiguchi
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Patent number: 10424812Abstract: An object of the present invention is to provide a non-aqueous electrolytic solution which can improve a non-aqueous electrolyte secondary battery in high-temperature storage characteristics and load characteristics, and a non-aqueous electrolyte secondary battery using the non-aqueous electrolytic solution. The present invention is directed to a non-aqueous electrolytic solution for use in a non-aqueous electrolyte secondary battery which comprises a positive electrode and a negative electrode each being capable of having occluded therein and releasing metal ions, wherein the non-aqueous electrolytic solution contains an electrolyte, a non-aqueous solvent, and a compound represented by the following general formula (A): wherein each of R1, R2, and Y represents a hydrocarbon group having 1 to 12 carbon atoms and optionally having a substituent, and X represents a hydrogen or fluorine atom, wherein R1, R2, and Y are the same or different.Type: GrantFiled: March 28, 2017Date of Patent: September 24, 2019Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Eiji Nakazawa, Shuhei Sawa
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Patent number: 10320030Abstract: Provided is a nonaqueous electrolyte solution battery with dramatically improved battery characteristics. A nonaqueous electrolyte solution battery prepared by using a nonaqueous electrolyte solution comprising (I) an aromatic carboxylic acid ester compound represented by General Formula (1) below; and (II) specific compounds, is improved in charge-discharge characteristics at high current densities, durability performance during high-temperature storage and overcharge characteristics. (in General Formula (1), A1 is —R1 or —OR1, with R1 being an optionally substituted hydrocarbon group with 10 or fewer carbon atoms; A2 is an optionally substituted aryl group; each of j and k is independently 0 or an integer greater than 0, and at least one of j and k is an integer not less than 1; and when k?1, A1 is —OR1, while when k=0, A1 is —R1; and the case of j=1, k=0 is not allowed).Type: GrantFiled: December 24, 2014Date of Patent: June 11, 2019Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Kanako Takiguchi, Masamichi Onuki, Shuhei Sawa
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Publication number: 20190051941Abstract: Objects of the invention are to provide nonaqueous electrolytic solutions that allow nonaqueous electrolyte secondary batteries to achieve improvements in initial battery characteristics and in battery characteristics after durability testing at the same time, and to provide nonaqueous electrolyte secondary batteries containing the nonaqueous electrolytic solutions.Type: ApplicationFiled: October 9, 2018Publication date: February 14, 2019Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Shuhei SAWA, Takashi FUJII, Kanako ITO, Koji FUKAMIZU, Ryo YAMAGUCHI, HIROMU WATANABE
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Patent number: 10177414Abstract: A nonaqueous electrolytic solution, containing an electrolyte, a nonaqueous solvent, an aromatic carboxylate ester and a compound is provided. The compound is fluorine-containing cyclic carbonates, sulfur-containing organic compounds, phosphonate esters, cyano group-containing organic compounds, isocyanate group-containing organic compounds, silicon-containing compounds, aromatic compounds, cyclic compounds having a plurality of ether bonds, monofluorophosphate salts, difluorophosphate salts, borate salts, oxalate salts or fluorosulfonate salts.Type: GrantFiled: July 14, 2016Date of Patent: January 8, 2019Assignee: Mitsubishi Chemical CorporationInventors: Shuhei Sawa, Takashi Fujii, Kanako Ito, Koji Fukamizu, Ryo Yamaguchi, Hiromu Watanabe
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Patent number: 9923238Abstract: An object is to provide a non-aqueous electrolyte solution that can improve the capacity deterioration and gas generation associated with the high-temperature storage of non-aqueous electrolyte batteries. A further object is to provide a non-aqueous electrolyte battery that uses this non-aqueous electrolyte solution. These objects can be achieved by using a non-aqueous electrolyte solution that incorporates, in prescribed contents, (A) a compound having at least two isocyanate groups per molecule and a compound having at least two cyano groups per molecule.Type: GrantFiled: August 12, 2013Date of Patent: March 20, 2018Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Shuhei Sawa, Minoru Kotato, Kunihisa Shima, Yasuyuki Shigematsu, Masamichi Onuki, Kanako Takiguchi
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Publication number: 20170200976Abstract: An object of the present invention is to provide a non-aqueous electrolytic solution which can improve a non-aqueous electrolyte secondary battery in high-temperature storage characteristics and load characteristics, and a non-aqueous electrolyte secondary battery using the non-aqueous electrolytic solution. The present invention is directed to a non-aqueous electrolytic solution for use in a non-aqueous electrolyte secondary battery which comprises a positive electrode and a negative electrode each being capable of having occluded therein and releasing metal ions, wherein the non-aqueous electrolytic solution contains an electrolyte, a non-aqueous solvent, and a compound represented by the following general formula (A): wherein each of R1, R2, and Y represents a hydrocarbon group having 1 to 12 carbon atoms and optionally having a substituent, and X represents a hydrogen or fluorine atom, wherein R1, R2, and Y are the same or different.Type: ApplicationFiled: March 28, 2017Publication date: July 13, 2017Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Eiji NAKAZAWA, Shuhei SAWA
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Patent number: 9653753Abstract: The demand for improvements in lithium non-aqueous electrolyte secondary batteries has been constantly increasing in recent years, but the durability—most prominently the cycle characteristics—have resided in a trade off relationship with properties such as the capacity, resistance, and output characteristics. A problem has thus been a poor overall property balance. In order to solve this problem, the present invention uses a non-aqueous electrolyte solution including, in addition to an electrolyte and a non-aqueous solvent, (A) at least one compound selected from the group consisting of carbonates having a carbon-carbon unsaturated bond, compounds represented by the following general formula (1), sulfoxides, sulfites, sulfones, sulfonates, sultones, and sulfates; (B) a fluorine atom-containing cyclic carbonate; and (C) a compound that has at least two isocyanate groups in the molecule.Type: GrantFiled: July 31, 2013Date of Patent: May 16, 2017Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Shuhei Sawa, Kunihisa Shima, Yasuyuki Shigematsu, Masamichi Onuki, Atsushi Watarai
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Patent number: 9553333Abstract: Provided are a nonaqueous electrolyte solution having improved durability properties in terms of cycling, storage and the like and improved discharge characteristic at a high current density, and a nonaqueous electrolyte battery that uses that nonaqueous electrolyte solution. The nonaqueous electrolyte solution containing a lithium salt and a nonaqueous solvent that dissolves the lithium salt, wherein the nonaqueous electrolyte solution contains a compound represented by formula (1) and at least one compound selected from the group consisting of a compound having a cyano group, a cyclic ester compound having a sulfur atom and a compound having an isocyanate group.Type: GrantFiled: March 15, 2013Date of Patent: January 24, 2017Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Hiroyuki Tokuda, Shuhei Sawa, Minoru Kotato, Kunihisa Shima, Youichi Ohashi, Koji Fukamizu
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Patent number: 9496585Abstract: The present invention relates to a nonaqueous electrolyte solution comprising a lithium salt and a nonaqueous organic solvent, wherein the nonaqueous electrolyte solution comprises a specific sulfonic acid ester.Type: GrantFiled: April 18, 2013Date of Patent: November 15, 2016Assignee: MITSUBISHI CHEMICAL CORPORATIONInventors: Shuhei Sawa, Minoru Kotato, Kunihisa Shima, Masamichi Onuki, Youichi Ohashi, Kazuki Watanabe