Patents by Inventor Keiichi Minami

Keiichi Minami 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).

  • Patent number: 11575151
    Abstract: A main object of the present disclosure is to provide a sulfide solid electrolyte with high ion conductivity. In the present disclosure, the above object is achieved by providing a sulfide solid electrolyte comprising: a Li element, an M element (M is at least one kind of P, Ge, Si and Sn), and a S element, and the sulfide solid electrolyte has an argyrodite type crystal phase, in 31P-MAS-NMR, the sulfide solid electrolyte has peak A at 82.1 ppm±0.5 ppm and peak B at 86.1 ppm±0.5 ppm, and when an area ratio of the peak A is regarded as SA, and an area ratio of the peak B is regarded as SB, a proportion of the SB to the SA, that is SB/SA, is 0.23 or less.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: February 7, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keiichi Minami
  • Patent number: 11532837
    Abstract: Provided are sulfide solid electrolyte particles which have sufficient ion conductivity and which are, when used in an all-solid-state battery, configured to suppress a resistance increase rate after charge-discharge cycles, and an all-solid-state battery comprising the sulfide solid electrolyte particles. The sulfide solid electrolyte particles may be sulfide solid electrolyte particles comprising a sulfide solid electrolyte that comprises Li, P, S and a halogen as constituent elements, wherein an oxygen/sulfur element ratio of a particle surface measured by XPS, is 0.79 or more and 1.25 or less, and an oxygen/sulfur element ratio at a depth of 30 nm (in terms of a SiO2 sputter rate) from the particle surface measured by XPS, is 0.58 or less.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: December 20, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keiichi Minami
  • Patent number: 11489196
    Abstract: Provided are sulfide solid electrolyte particles which have sufficient ion conductivity and which are configured to suppress hydrogen sulfide generation, and an all-solid-state battery comprising the sulfide solid electrolyte particles. Disclosed are sulfide solid electrolyte particles comprising Li, P, S and a halogen as constituent elements and having a Li/P molar ratio of more than 3, wherein an oxygen/sulfur element ratio of a particle surface measured by XPS is 0.29 or more and 0.81 and less, and an oxygen/sulfur element ratio at a depth of 30 nm (in terms of a SiO2 sputter rate) from the particle surface measured by XPS, is 0.29 or less.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: November 1, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keiichi Minami
  • Patent number: 11444320
    Abstract: Provided are sulfide solid electrolyte particles which have sufficient ion conductivity and which are configured to suppress hydrogen sulfide generation, and an all-solid-state battery comprising the sulfide solid electrolyte particles. Disclosed are sulfide solid electrolyte particles comprising Li, P, S and a halogen as constituent elements and having a Li/P molar ratio of more than 3, wherein an oxygen/sulfur element ratio of a particle surface measured by XPS is 0.29 or more and 0.81 and less, and an oxygen/sulfur element ratio at a depth of 30 nm (in terms of a SiO2 sputter rate) from the particle surface measured by XPS, is 0.29 or less.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: September 13, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keiichi Minami
  • Publication number: 20220231327
    Abstract: A main object of the present disclosure is to provide a sulfide solid electrolyte having excellent ion conductivity and water resistance. The present disclosure achieves the object by providing a sulfide solid electrolyte comprising Li, P, S and CO32?; wherein the sulfide solid electrolyte includes a crystal phase with Li7P3S11 structure as a main phase; in an X-ray diffraction measurement using a CuK? ray, when IA designates a peak intensity of Li2S that appears at the position of 2?=27.0°±0.5°, and IB designates a peak intensity of the crystal phase that appears at the position of 2?=23.65°±0.50°, IA/IB is 0 or more and 0.39 or less; and a peak of a heterogeneous phase that appears at the position of 2?=16.5°±0.5° is not included.
    Type: Application
    Filed: December 2, 2021
    Publication date: July 21, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keiichi MINAMI
  • Publication number: 20220077528
    Abstract: A photocurable composition includes a compound having one (meth)acryloyl group in one molecule and not having a urethane bond and a photoradical polymerization initiator as essential components, and further includes a compound having one (meth)acryloyl group in one molecule and not having a urethane bond, a compound having a (meth)acryloyl group and a urethane bond, and a compound having another ethylenically unsaturated group as optional components, in which a viscosity of the photocurable composition at 25° C. is 1 Pa·s to 100 Pa·s. The photocurable composition is a material for forming a resin layer on at least a part of a side surface of a laminated electrode body in an all-solid-state battery.
    Type: Application
    Filed: July 2, 2021
    Publication date: March 10, 2022
    Inventors: Masato ONO, Kazuhito KATO, Keiichi MINAMI, Katsuaki ODAGI, Kazumasa INATA, Yousuke KOIDE
  • Publication number: 20210296689
    Abstract: An all-solid-state battery includes a case, a battery element, and a restraint component. The case accommodates the battery element. The battery element includes an electrode part and a resin part. The resin part covers at least a part of a side face of the electrode part. The restraint component applies a first pressure to the electrode part. The restraint component applies a second pressure to the resin part. The ratio of the second pressure to the first pressure is from 1.5 to 18.
    Type: Application
    Filed: March 16, 2021
    Publication date: September 23, 2021
    Inventors: Motoshi Isono, Masato Ono, Keiichi Minami, Kazuhito Kato, Katsuaki Odagi
  • Publication number: 20210265655
    Abstract: The present disclosure provides a method for producing a sulfide solid electrolyte having good ionic conductivity and water resistance. The method for producing a sulfide solid electrolyte includes: an amorphizing step of obtaining a sulfide glass by amorphizing a first raw material composition including Li2S, Li2CO3, P2S5, LiI and LiBr, and a heating step of heating the sulfide glass at a temperature equal to or higher than a crystallization temperature.
    Type: Application
    Filed: February 16, 2021
    Publication date: August 26, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keiichi MINAMI
  • Publication number: 20210143469
    Abstract: A method for producing a sulfide solid electrolyte material, which is configured to allow the crystallization of a sulfide glass at low temperature. Provided is a method for producing a sulfide solid electrolyte material, the method comprising: amorphizing a raw material composition containing Li2S, P2S5, LiI, LiBr, a potassium-containing compound and Li3N to obtain a sulfide glass, and crystallizing the sulfide glass by hot-pressing the sulfide glass, wherein, when a first crystallization temperature of the sulfide glass is determined as X, and a second crystallization temperature of the sulfide glass is determined as Y, the first crystallization temperature X of the sulfide glass is 171° C. or less, and a temperature difference (Y?X) between the second crystallization temperature Y and the first crystallization temperature X is 75° C. or more.
    Type: Application
    Filed: November 10, 2020
    Publication date: May 13, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keiichi MINAMI
  • Publication number: 20210111428
    Abstract: Disclosed is a sulfide solid electrolyte of high robustness in its production step and of high lithium ion conductivity, the sulfide solid electrolyte including Li, P, S, Br, I, and N as its constituent elements.
    Type: Application
    Filed: December 22, 2020
    Publication date: April 15, 2021
    Inventor: Keiichi Minami
  • Patent number: 10903517
    Abstract: Disclosed is a sulfide solid electrolyte of high robustness in its production step and of high lithium ion conductivity, the sulfide solid electrolyte including Li, P, S, Br, I, and N as its constituent elements.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: January 26, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Keiichi Minami
  • Publication number: 20200313234
    Abstract: A main object of the present disclosure is to provide a sulfide solid electrolyte with high ion conductivity. In the present disclosure, the above object is achieved by providing a sulfide solid electrolyte comprising: a Li element, an M element (M is at least one kind of P, Ge, Si and Sn), and a S element, and the sulfide solid electrolyte has an argyrodite type crystal phase, in 31P-MAS-NMR, the sulfide solid electrolyte has peak A at 82.1 ppm±0.5 ppm and peak B at 86.1 ppm±0.5 ppm, and when an area ratio of the peak A is regarded as SA, and an area ratio of the peak B is regarded as SB, a proportion of the SB to the SA, that is SB/SA, is 0.23 or less.
    Type: Application
    Filed: March 25, 2020
    Publication date: October 1, 2020
    Inventor: Keiichi MINAMI
  • Publication number: 20200235423
    Abstract: Provided are sulfide solid electrolyte particles which have sufficient ion conductivity and which are configured to suppress hydrogen sulfide generation, and an all-solid-state battery comprising the sulfide solid electrolyte particles. Disclosed are sulfide solid electrolyte particles comprising Li, P, S and a halogen as constituent elements and having a Li/P molar ratio of more than 3, wherein an oxygen/sulfur element ratio of a particle surface measured by XPS is 0.29 or more and 0.81 and less, and an oxygen/sulfur element ratio at a depth of 30 nm (in terms of a SiO2 sputter rate) from the particle surface measured by XPS, is 0.29 or less.
    Type: Application
    Filed: January 15, 2020
    Publication date: July 23, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keiichi Minami
  • Publication number: 20200235422
    Abstract: Provided are sulfide solid electrolyte particles which have sufficient ion conductivity and which are, when used in an all-solid-state battery, configured to suppress a resistance increase rate after charge-discharge cycles, and an all-solid-state battery comprising the sulfide solid electrolyte particles. The sulfide solid electrolyte particles may be sulfide solid electrolyte particles comprising a sulfide solid electrolyte that comprises Li, P, S and a halogen as constituent elements, wherein an oxygen/sulfur element ratio of a particle surface measured by XPS, is 0.79 or more and 1.25 or less, and an oxygen/sulfur element ratio at a depth of 30 nm (in terms of a SiO2 sputter rate) from the particle surface measured by XPS, is 0.58 or less.
    Type: Application
    Filed: January 15, 2020
    Publication date: July 23, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keiichi MINAMI
  • Patent number: 10293328
    Abstract: A nitrogen oxide (NOx) reduction catalyst that includes a transition metal tungstate having the formula: MWO4 wherein M is selected from the group consisting of Mn, Fe, Co, Ni, and Cu. The catalyst may be utilized in various environments including oxygen rich and oxygen deficient environments.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: May 21, 2019
    Assignees: Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Jidosha Kabushiki Kaisha
    Inventors: Hongfei Jia, Charles A. Roberts, Mitsuru Sakano, Keiichi Minami, Torin C. Peck, Paul T. Fanson
  • Publication number: 20180269527
    Abstract: Disclosed is a sulfide solid electrolyte of high robustness in its production step and of high lithium ion conductivity, the sulfide solid electrolyte including Li, P, S, Br, I, and N as its constituent elements.
    Type: Application
    Filed: February 21, 2018
    Publication date: September 20, 2018
    Inventor: Keiichi Minami
  • Publication number: 20180207623
    Abstract: A nitrogen oxide (NOx) reduction catalyst that includes a transition metal tungstate having the formula: MWO4 wherein M is selected from the group consisting of Mn, Fe, Co, Ni, and Cu. The catalyst may be utilized in various environments including oxygen rich and oxygen deficient environments.
    Type: Application
    Filed: January 19, 2018
    Publication date: July 26, 2018
    Applicant: Toyota Jidosha Kabushi Kaisha
    Inventors: Hongfei Jia, Charles A. Roberts, Mitsuru Sakano, Keiichi Minami, Torin C. Peck, Paul T. Fanson
  • Publication number: 20180193819
    Abstract: An exhaust gas purification catalyst containing a CeO2 particle supported on the surface of an MnO2 particle, wherein the Ce amount relative to the total amount of Mn and Ce (Ce/(Mn+Ce)) in the catalyst is more than 0 mol % and 40 mol % or less; and a method for producing the exhaust gas purification catalyst above, including mixing an aqueous solution containing a manganese ion and a cerium ion in a ratio of more than 0 mol % and 40 mol % or less in terms of the Ce amount relative to the total amount of Mn and Ce (Ce/(Mn+Ce)) and an aqueous solution having dissolved therein a carbonate ion-containing reducing agent, thereby precipitating a particle, and firing the particle, are provided.
    Type: Application
    Filed: March 5, 2018
    Publication date: July 12, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenji FURUI, Keiichi MINAMI
  • Patent number: 9789474
    Abstract: The problem to be solved by the present invention is to provide a good NOx selective reduction catalyst. To solve the problem is a NOx selective reduction catalyst containing a composite oxide of Ti, Ce, W, and P or S.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: October 17, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keiichi Minami
  • Publication number: 20170232424
    Abstract: An exhaust gas purification catalyst containing a CeO2 particle supported on the surface of an MnO2 particle, wherein the Ce amount relative to the total amount of Mn and Ce (Ce/(Mn+Ce)) in the catalyst is more than 0 mol % and 40 mol % or less; and a method for producing the exhaust gas purification catalyst above, including mixing an aqueous solution containing a manganese ion and a cerium ion in a ratio of more than 0 mol % and 40 mol % or less in terms of the Ce amount relative to the total amount of Mn and Ce (Ce/(Mn+Ce)) and an aqueous solution having dissolved therein a carbonate ion-containing reducing agent, thereby precipitating a particle, and firing the particle, are provided.
    Type: Application
    Filed: January 12, 2017
    Publication date: August 17, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenji FURUI, Keiichi MINAMI