Patents by Inventor Koichi Nishio

Koichi Nishio 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).

  • Publication number: 20240136583
    Abstract: The present invention relates to: [1] a nonaqueous electrolytic solution containing a compound (A) represented by formula (I); and [2] a nonaqueous electrolytic solution battery including a positive electrode, a negative electrode, and the nonaqueous electrolytic solution.
    Type: Application
    Filed: December 5, 2023
    Publication date: April 25, 2024
    Applicant: MU Ionic Solutions Corporation
    Inventors: Koichi NISHIO, Ryo NOZAWA, Daisuke KAWAKAMI
  • Patent number: 11936044
    Abstract: A carbon material for a non-aqueous secondary battery containing a graphite capable of occluding and releasing lithium ions, and having a cumulative pore volume at pore diameters in a range of 0.01 ?m to 1 ?m of 0.08 mL/g or more, a roundness, as determined by flow-type particle image analysis, of 0.88 or greater, and a pore diameter to particle diameter ratio (PD/d50 (%)) of 1.8 or less, the ratio being given by equation (1A): PD/d50 (%)=mode pore diameter (PD) in a pore diameter range of 0.01 ?m to 1 ?m in a pore distribution determined by mercury intrusion/volume-based average particle diameter (d50)×100 is provided.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: March 19, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shunsuke Yamada, Nobuyuki Ishiwatari, Satoshi Akasaka, Daigo Nagayama, Shingo Morokuma, Koichi Nishio, Iwao Soga, Hideaki Tanaka, Takashi Kameda, Tooru Fuse, Hiromitsu Ikeda
  • Publication number: 20230352686
    Abstract: A method for producing a carbon material may include: granulating a raw carbon material by applying mechanical energy comprising impact, compression, friction, and/or shear force. The granulating may be carried out in the presence of a granulating agent. The granulating agent may be liquid during the granulating of the raw carbon material. Alternatively or in addition, the granulating agent may include no organic solvent, an organic solvent having no flash point, or no organic solvent having a flash point of 5° C. or higher.
    Type: Application
    Filed: June 9, 2023
    Publication date: November 2, 2023
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shunsuke YAMADA, Nobuyuki ISHIWATARI, Satoshi AKASAKA, Daigo NAGAYAMA, Shingo MOROKUMA, Koichi NISHIO, Iwao SOGA, Hideaki TANAKA, Takashi KAMEDA, Tooru FUSE, Hiromitsu IKEDA
  • Publication number: 20230343990
    Abstract: Provided is a nonaqueous electrolyte secondary battery, including a positive electrode with a positive electrode active material capable of absorbing and releasing a metal ion; a negative electrode with a negative electrode active material capable of absorbing and releasing a metal ion; and a nonaqueous electrolyte solution; wherein the positive electrode active material includes a lithium transition metal compound, and the positive electrode active material includes at least Ni, Mn and Co, wherein the molar ratio of Mn/(Ni+Mn+Co) is larger than 0 and not larger than 0.28, the molar ratio of Ni/(Ni+Mn+Co) is 0.45 or more, the plate density of the positive electrode is 3.3 g/cm3 or more; and the nonaqueous electrolyte solution includes a monofluorophosphate and/or a difluorophosphate. A total content of the monofluorophosphate and/or difluorophosphate is 0.01% by mass or more in terms of the concentration in the nonaqueous electrolyte solution.
    Type: Application
    Filed: June 26, 2023
    Publication date: October 26, 2023
    Applicants: Mitsubishi Chemical Corporation, MU IONIC SOLUTIONS CORPORATION
    Inventors: Koichi NISHIO, Jungmin KIM
  • Patent number: 11784342
    Abstract: Provided is a nonaqueous electrolyte secondary battery, including a positive electrode with a positive electrode active material capable of absorbing and releasing a metal ion; a negative electrode with a negative electrode active material capable of absorbing and releasing a metal ion; and a nonaqueous electrolyte solution; wherein the positive electrode active material includes a lithium transition metal compound, and the positive electrode active material includes at least Ni, Mn and Co, wherein the molar ratio of Mn/(Ni+Mn+Co) is larger than 0 and not larger than 0.32, the molar ratio of Ni/(Ni+Mn+Co) is 0.55 or more, the plate density of the positive electrode is 3.0 g/cm3 or more; and the nonaqueous electrolyte solution includes a monofluorophosphate and/or a difluorophosphate. A total content of the monofluorophosphate and/or difluorophosphate is 0.01% by mass or more in terms of the concentration in the nonaqueous electrolyte solution.
    Type: Grant
    Filed: August 4, 2022
    Date of Patent: October 10, 2023
    Assignees: Mitsubishi Chemical Corporation, MU IONIC SOLUTIONS CORPORATION
    Inventors: Koichi Nishio, Jungmin Kim
  • Publication number: 20230207883
    Abstract: The present invention provides a non-aqueous liquid electrolyte that can inhibit a capacity loss during continuous charging of a cell. A non-aqueous liquid electrolyte containing oxalato-complex anions (A), LiPF6, a symmetrical chain-form carbonate, and a chain-form carboxylic acid ester (C) in which the viscosity at 25° C. is 0.01-0.47 cP, wherein the non-aqueous liquid electrolyte is characterized in that: the ratio (A/B) of the amount (mass) of oxalato-complex anions (A) to the amount (mass) of PF6? anions (B) is 0.0001-0.30; and the total amount of the symmetrical chain-form carbonate and the chain-form carboxylic acid ester (C) in which the viscosity at 25° C. is 0.01-0.47 cP, relative to the total amount of the non-aqueous liquid electrolyte, is 1-45 mass %.
    Type: Application
    Filed: March 7, 2023
    Publication date: June 29, 2023
    Applicants: Mitsubishi Chemical Corporation, MU Ionic Solutions Corporation
    Inventors: Koichi Nishio, Daisuke Kawakami
  • Publication number: 20220384840
    Abstract: Provided is a nonaqueous electrolyte secondary battery, including a positive electrode with a positive electrode active material capable of absorbing and releasing a metal ion; a negative electrode with a negative electrode active material capable of absorbing and releasing a metal ion; and a nonaqueous electrolyte solution; wherein the positive electrode active material includes a lithium transition metal compound, and the positive electrode active material includes at least Ni, Mn and Co, wherein the molar ratio of Mn/(Ni+Mn+Co) is larger than 0 and not larger than 0.32, the molar ratio of Ni/(Ni+Mn+Co) is 0.55 or more, the plate density of the positive electrode is 3.0 g/cm3 or more; and the nonaqueous electrolyte solution includes a monofluorophosphate and/or a difluorophosphate. A total content of the monofluorophosphate and/or difluorophosphate is 0.01% by mass or more in terms of the concentration in the nonaqueous electrolyte solution.
    Type: Application
    Filed: August 4, 2022
    Publication date: December 1, 2022
    Applicants: Mitsubishi Chemical Corporation, MU IONIC SOLUTIONS CORPORATION
    Inventors: Koichi NISHIO, Jungmin KIM
  • Publication number: 20220328878
    Abstract: 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: Application
    Filed: June 10, 2022
    Publication date: October 13, 2022
    Applicants: Mitsubishi Chemical Corporation, MU Ionic Solutions Corporation
    Inventors: Shuhei Sawa, Daisuke Kawakami, Koichi Nishio
  • Patent number: 11450880
    Abstract: Provided is a nonaqueous electrolyte secondary battery, in which the capacity retention rate after high temperature storage is high, the gas amount after high temperature storage is suppressed, the resistance after high temperature storage is low, the amount of metal dissolution from a positive electrode is small, and the amount of heat generation at a high temperature is small. A nonaqueous electrolyte secondary battery including a positive electrode with a positive electrode active material capable of absorbing and releasing a metal ion; a negative electrode with a negative electrode active material capable of absorbing and releasing a metal ion; and a nonaqueous electrolyte solution; wherein the positive electrode active material includes a lithium transition metal compound, and the positive electrode active material includes at least Ni, Mn and Co, wherein the molar ratio of Mn/(Ni+Mn+Co) is larger than 0 and not larger than 0.32, the molar ratio of Ni/(Ni+Mn+Co) is 0.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: September 20, 2022
    Assignees: Mitsubishi Chemical Corporation, MU IONIC SOLUTIONS CORPORATION
    Inventors: Koichi Nishio, Jungmin Kim
  • Publication number: 20220149435
    Abstract: 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: Application
    Filed: January 26, 2022
    Publication date: May 12, 2022
    Applicants: Mitsubishi Chemical Corporation, MU Ionic Solutions Corporation
    Inventors: Shuhei Sawa, Koichi Nishio, Takeshi Nakamura, Kaho Tamai
  • Publication number: 20220123311
    Abstract: A carbon material may include granulated particles made of a carbonaceous material and satisfying (2L), ? X 1 - X ? / X 1 ? 0.2 , ( 2 ? L ) wherein X is a volume-based average particle diameter determined by laser diffraction, and X1 is an equivalent circular diameter determined from a cross-sectional SEM image, which is a reflected electron image acquired at 10 kV, wherein the carbon material has an average inter-void distance Z of 30 granulated particles randomly selected from a cross-sectional SEM image of the carbon material, as Zave, and wherein the carbon material has volume-based average particle diameter X determined by laser diffraction in a Zave/X ratio of 0.060 or less.
    Type: Application
    Filed: December 30, 2021
    Publication date: April 21, 2022
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shunsuke YAMADA, Nobuyuki ISHIWATARI, Satoshi AKASAKA, Daigo NAGAYAMA, Shingo MOROKUMA, Koichi NISHIO, Iwao SOGA, Hideaki TANAKA, Takashi KAMEDA, Tooru FUSE, Hiromitsu IKEDA
  • Publication number: 20220123309
    Abstract: A carbon material may include granulated particles satisfying (1L) and (2L): (1L) the granulated particles are made of a carbonaceous material; and (2L) the granulated particles satisfy the relationship |X1?X|/X1?0.2, wherein X is a volume-based average particle diameter determined by laser diffraction, and X1 is an equivalent circular diameter as determined from a cross-sectional SEM image, provided that the cross-sectional SEM image is a reflected electron image acquired at an acceleration voltage of 10 kV, wherein the carbon material has an average box-counting dimension relative to void regions of 30 particles of 1.55 or greater, as calculated from images obtained by randomly selecting 30 granulated particles from a cross-sectional SEM image of the carbon material, dividing the cross-sectional SEM image of each granulated particle into void regions and non-void regions, and binarizing the image. Such carbon material may be used in electrodes and batteries.
    Type: Application
    Filed: December 30, 2021
    Publication date: April 21, 2022
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shunsuke YAMADA, Nobuyuki ISHIWATARI, Satoshi AKASAKA, Daigo NAGAYAMA, Shingo MOROKUMA, Koichi NISHIO, Iwao SOGA, Hideaki TANAKA, Takashi KAMEDA, Tooru FUSE, Hiromitsu IKEDA
  • Publication number: 20220123308
    Abstract: A carbon material may satisfying inequality (1K): 10.914 > 5 ? x k - y k - 0.0087 ? a , ( 1 ? K ) wherein a is a volume-based average particle diameter in um of the carbon material, xk is a true density in g/cm3 of the carbon material, and yk is a value determined by equation (2K): y k = D 100 - D T , ( 2 ? K ) wherein D100 is density in g/cm3 of carbon material under uniaxial load of 100 kgf/3.14 cm2, and DT is tap density of carbon material in g/cm3. Such carbon materials may be used in electrodes and batteries.
    Type: Application
    Filed: December 30, 2021
    Publication date: April 21, 2022
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shunsuke YAMADA, Nobuyuki ISHIWATARI, Satoshi AKASAKA, Daigo NAGAYAMA, Shingo MOROKUMA, Koichi NISHIO, Iwao SOGA, Hideaki TANAKA, Takashi KAMEDA, Tooru FUSE, Hiromitsu IKEDA
  • Publication number: 20220123310
    Abstract: A carbon material may include granulated particles made of a carbonaceous material and satisfying (2L): ? X 1 - X ? / X 1 ? 0.2 , ( 2 ? L ) wherein X is a volume-based average particle diameter determined by laser diffraction, and X1 is an equivalent circular diameter determined from a cross-sectional SEM image, which is a reflected electron image acquired at an acceleration voltage of 10 kV, wherein X and X1 are determined from a cross-sectional SEM image, by drawing grid lines to split the minor axis and the major axis of a target granulated particle each into 20 parts to obtain a grid, and using cells in the grid, compartmentalizing the target granulated particle in a compartment.
    Type: Application
    Filed: December 30, 2021
    Publication date: April 21, 2022
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shunsuke YAMADA, Nobuyuki ISHIWATARI, Satoshi AKASAKA, Daigo NAGAYAMA, Shingo MOROKUMA, Koichi NISHIO, Iwao SOGA, Hideaki TANAKA, Takashi KAMEDA, Tooru FUSE, Hiromitsu IKEDA
  • Publication number: 20200185721
    Abstract: Provided is a method to manufacture a composite carbon material capable of obtaining a non-aqueous secondary battery, which has high capacity, initial efficiency, and low charging resistance and is excellent in productivity. As a result thereof, a high-performance non-aqueous secondary battery is stably provided with efficiency. A composite carbon material for a non-aqueous secondary battery is provided, which contains at least a bulk mesophase artificial graphite particle (A) and graphite particle (B) having an aspect ratio of 5 or greater, and which is capable of absorbing and releasing lithium ions. A graphite crystal layered structure of the graphite particle (B) is arranged in the same direction as a direction of an outer peripheral surface of the bulk mesophase artificial graphite particle (A) at a part of a surface of the bulk mesophase artificial graphite particle (A), and an average circularity of the composite carbon material is 0.9 or greater.
    Type: Application
    Filed: February 14, 2020
    Publication date: June 11, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Shunsuke YAMADA, Nobuyuki ISHIWATARI, Satoshi AKASAKA, Iwao SOGA, Hideaki TANAKA, Tooru FUSE, Shingo MOROKUMA, Koichi NISHIO
  • Publication number: 20200176807
    Abstract: Provided is a nonaqueous electrolyte secondary battery, in which the capacity retention rate after high temperature storage is high, the gas amount after high temperature storage is suppressed, the resistance after high temperature storage is low, the amount of metal dissolution from a positive electrode is small, and the amount of heat generation at a high temperature is small. A nonaqueous electrolyte secondary battery including a positive electrode with a positive electrode active material capable of absorbing and releasing a metal ion; a negative electrode with a negative electrode active material capable of absorbing and releasing a metal ion; and a nonaqueous electrolyte solution; wherein the positive electrode active material includes a lithium transition metal compound, and the positive electrode active material includes at least Ni, Mn and Co, wherein the molar ratio of Mn/(Ni+Mn+Co) is larger than 0 and not larger than 0.32, the molar ratio of Ni/(Ni+Mn+Co) is 0.
    Type: Application
    Filed: February 7, 2020
    Publication date: June 4, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Koichi Nishio, Jungmin Kim
  • Publication number: 20180013146
    Abstract: Provided is a carbon material capable of obtaining a non-aqueous secondary battery, which has high capacity, initial efficiency, and low charging resistance and is excellent in productivity. As a result thereof, a high-performance non-aqueous secondary battery is stably provided with efficiency. A composite carbon material for a non-aqueous secondary battery is provided, which contains at least a bulk mesophase artificial graphite particle (A) and graphite particle (B) having an aspect ratio of 5 or greater, and which is capable of absorbing and releasing lithium ions. A graphite crystal layered structure of the graphite particle (B) is arranged in the same direction as a direction of an outer peripheral surface of the bulk mesophase artificial graphite particle (A) at a part of a surface of the bulk mesophase artificial graphite particle (A), and an average circularity of the composite carbon material is 0.9 or greater.
    Type: Application
    Filed: July 14, 2017
    Publication date: January 11, 2018
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: SHUNSUKE YAMADA, NOBUYUKI ISHIWATARI, SATOSHI AKASAKA, IWAO SOGA, HIDEAKI TANAKA, TOORU FUSE, SHINGO MOROKUMA, KOICHI NISHIO
  • Publication number: 20170187041
    Abstract: A carbon material for a non-aqueous secondary battery containing a graphite capable of occluding and releasing lithium ions, and having a cumulative pore volume at pore diameters in a range of 0.01 ?m to 1 ?m of 0.08 mL/g or more, a roundness, as determined by flow-type particle image analysis, of 0.88 or greater, and a pore diameter to particle diameter ratio (PD/d50 (%)) of 1.8 or less, the ratio being given by equation (1A): PD/d50 (%)=mode pore diameter (PD) in a pore diameter range of 0.01 ?m to 1 ?m in a pore distribution determined by mercury intrusion/volume-based average particle diameter (d50)×100 is provided.
    Type: Application
    Filed: January 5, 2017
    Publication date: June 29, 2017
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shunsuke YAMADA, Nobuyuki ISHIWATARI, Satoshi AKASAKA, Daigo NAGAYAMA, Shingo MOROKUMA, Koichi NISHIO, Iwao SOGA, Hideaki TANAKA, Takashi KAMEDA, Tooru FUSE, Hiromitsu IKEDA
  • Patent number: 8324420
    Abstract: There is provided a process for stereoselectively producing E-form of 3-acyloxyacrylonitrile compound (3) or Z-form which comprises reacting 3-oxopropionitrile compound (1) with an acid chloride (2), characterized in that the reaction is conducted with removal of hydrogen chloride, or by using an organic base or an inorganic base, to thereby regulate the stereostructure of the product; a process for producing the compound (1) characterized by reacting acetonitrile compound (5) with an aromatic ester compound (6) by use of an alkali metal alkoxide in a hydrocarbon solvent while removing alcohol formed as a by-product by azeotropic distillation in a separating tank; and a process for isomerizing E-form of 3-acyloxyacrylonitrile compound to Z-form thereof by use of an organic base.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: December 4, 2012
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Kenzo Fukuda, Yasuo Kondo, Norio Tanaka, Hideaki Suzuki, Masatoshi Ohnari, Koichi Nishio
  • Patent number: 8138368
    Abstract: There is provided a process for stereoselectively producing E-form of 3-acyloxyacrylonitrile compound (3) or Z-form which comprises reacting 3-oxopropionitrile compound (1) with an acid chloride (2), characterized in that the reaction is conducted with removal of hydrogen chloride, or by using an organic base or an inorganic base, to thereby regulate the stereostructure of the product; a process for producing the compound (1) characterized by reacting acetonitrile compound (5) with an aromatic ester compound (6) by use of an alkali metal alkoxide in a hydrocarbon solvent while removing alcohol formed as a by-product by azeotropic distillation in a separating tank; and a process for isomerizing E-form of 3-acyloxyacrylonitrile compound to Z-form thereof by use of an organic base.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: March 20, 2012
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Kenzo Fukuda, Yasuo Kondo, Norio Tanaka, Hideaki Suzuki, Masatoshi Ohnari, Koichi Nishio