Patents by Inventor Satoshi Kanada

Satoshi Kanada 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: 11108042
    Abstract: A positive electrode composite material for a lithium ion secondary battery that makes it possible to appropriately reduce the electric resistance in a positive electrode and to realize a high-performance lithium ion secondary battery. The positive electrode composite material to be used in the positive electrode of the lithium ion secondary battery includes a particulate positive electrode active material composed of a lithium composite oxide having a layered crystal structure including at least lithium, and a conductive oxide. Here, a particulate region where primary particles of the conductive oxide are aggregated, and a film-shaped region where the conductive oxide is formed in a film shape adhere to at least a part of the surface of the positive electrode active material. The average particle diameter based on cross-sectional TEM observation of primary particles in the particulate region is equal to or greater than 0.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: August 31, 2021
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, SUMITOMO METAL MINING CO., LTD.
    Inventors: Daisuke Horikawa, Ryuta Sugiura, Taira Aida, Satoshi Kanada
  • Patent number: 11018335
    Abstract: A positive electrode for a lithium ion secondary battery includes a positive electrode composite material layer. The positive electrode composite material layer includes composite particles and electron conductive particles. The composite particles include positive electrode active material particles and a coating film. The coating film is formed on the surface of the positive electrode active material particles. The coating film contains a first electron conductive oxide. The electron conductive particles are dispersed in the positive electrode composite material layer. The electron conductive particles contain a second electron conductive oxide. Each of the first electron conductive oxide and the second electron conductive oxide has a perovskite structure.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: May 25, 2021
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, SUMITOMO METAL MINING CO., LTD.
    Inventors: Daisuke Horikawa, Ryuta Sugiura, Satoshi Kanada, Tetsutaro Hayashi, Taira Aida
  • Patent number: 10971720
    Abstract: A positive electrode active material includes secondary particles. The secondary particles include a plurality of primary particles. The primary particles include a lithium-containing composite metal oxide. Inside the secondary particles, an electron conducting oxide is disposed at at least a part of a grain boundary between the primary particles. The electron conducting oxide has a perovskite structure.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: April 6, 2021
    Assignees: Toyota Jidosha Kabushiki Kaisha, Sumitomo Metal Mining Co., Ltd.
    Inventors: Ryuta Sugiura, Satoshi Kanada, Tetsutaro Hayashi, Taira Aida
  • Patent number: 10777815
    Abstract: A cathode active material that is able to improve storage characteristics without deteriorating charging and discharging capacity is provided. By mixing lithium nickel containing composite oxide particles comprising a layered rock-salt type crystal structure, a lithium compound, and an alkali metal compound; calcining the mixed powder at a temperature range of 800° C. to 1000° C.; washing and removing alkali metal other than lithium; mixing washed calcined particles with a lithium compound again; calcining the mixture in an oxidizing atmosphere at a temperature range of 600° C. to 800° C., lithium nickel containing composite oxide comprising a layered rock-salt type crystal structure and a peak intensity ratio of (003) plane with respect to (104) plane of 1.2 or more that are obtained by X-ray powder diffraction using Cu-K? ray as an X-ray source is obtained.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: September 15, 2020
    Assignees: SUMITOMO METAL MINING CO., LTD., SHINSHU UNIVERSITY
    Inventors: Satoshi Kanada, Katsuya Teshima, Nobuyuki Zettsu, Takeshi Kimijima
  • Publication number: 20200058936
    Abstract: A positive electrode composite material for a lithium ion secondary battery that makes it possible to appropriately reduce the electric resistance in a positive electrode and to realize a high-performance lithium ion secondary battery. The positive electrode composite material to be used in the positive electrode of the lithium ion secondary battery includes a particulate positive electrode active material composed of a lithium composite oxide having a layered crystal structure including at least lithium, and a conductive oxide. Here, a particulate region where primary particles of the conductive oxide are aggregated, and a film-shaped region where the conductive oxide is formed in a film shape adhere to at least a part of the surface of the positive electrode active material. The average particle diameter based on cross-sectional TEM observation of primary particles in the particulate region is equal to or greater than 0.
    Type: Application
    Filed: February 8, 2018
    Publication date: February 20, 2020
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, SUMITOMO METAL MINING CO., LTD.
    Inventors: Daisuke HORIKAWA, Ryuta SUGIURA, Taira AIDA, Satoshi KANADA
  • Publication number: 20190372090
    Abstract: Provided is a positive electrode material that allows reducing battery resistance. The positive electrode material disclosed herein has particles of a positive electrode active material, each having a void communicating between the surface and at least the interior; and an electronic conductor present on the surface of the particles of the positive electrode active material. The positive electrode active material has a layered rock salt structure, and has a composition represented by Formula (I) below. The electronic conductor has a composition represented by Formula (II) below, Li1+uNixMnyCozMtO2??(I) La1?pMapCo1?qMbqO3????(II) wherein the symbols in the formulas are as defined in the specification.
    Type: Application
    Filed: May 13, 2019
    Publication date: December 5, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, SUMITOMO METAL MINING CO., LTD.
    Inventors: Ryuta SUGIURA, Taira AIDA, Tetsutaro HAYASHI, Satoshi KANADA
  • Publication number: 20190165372
    Abstract: A positive electrode material for a lithium secondary battery, including: a positive electrode active material represented by Li1+?NixCoyMnzMItO2 and having a layered rock salt-type crystal structure; an electron-conducting oxide represented by LapAe1?pCoqMII1?qO3??; and a Li ion-conducting oxide including Li element, 0 element, and at least one element selected from W, P, Nb, and Si.
    Type: Application
    Filed: November 20, 2018
    Publication date: May 30, 2019
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, SUMITOMO METAL MINING CO., LTD.
    Inventors: Ryuta SUGIURA, Taira AIDA, Tetsutaro HAYASHI, Satoshi KANADA
  • Publication number: 20180316000
    Abstract: A positive electrode active material includes secondary particles. The secondary particles include a plurality of primary particles. The primary particles include a lithium-containing composite metal oxide. Inside the secondary particles, an electron conducting oxide is disposed at at least a part of a grain boundary between the primary particles. The electron conducting oxide has a perovskite structure.
    Type: Application
    Filed: April 16, 2018
    Publication date: November 1, 2018
    Applicants: Toyota Jidosha Kabushiki Kaisha, Sumitomo Metal Mining Co., Ltd.
    Inventors: Ryuta Sugiura, Satoshi Kanada, Tetsutaro Hayashi, Taira Aida
  • Publication number: 20180316003
    Abstract: A positive electrode for a lithium ion secondary battery includes a positive electrode composite material layer. The positive electrode composite material layer includes composite particles and electron conductive particles. The composite particles include positive electrode active material particles and a coating film. The coating film is formed on the surface of the positive electrode active material particles. The coating film contains a first electron conductive oxide. The electron conductive particles are dispersed in the positive electrode composite material layer. The electron conductive particles contain a second electron conductive oxide. Each of the first electron conductive oxide and the second electron conductive oxide has a perovskite structure.
    Type: Application
    Filed: April 17, 2018
    Publication date: November 1, 2018
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, SUMITOMO METAL MINING CO., LTD.
    Inventors: Daisuke HORIKAWA, Ryuta SUGIURA, Satoshi KANADA, Tetsutaro HAYASHI, Taira AIDA
  • Publication number: 20180309124
    Abstract: A cathode active material that is able to improve storage characteristics without deteriorating charging and discharging capacity is provided. By mixing lithium nickel containing composite oxide particles comprising a layered rock-salt type crystal structure, a lithium compound, and an alkali metal compound; calcining the mixed powder at a temperature range of 800° C. to 1000° C.; washing and removing alkali metal other than lithium; mixing washed calcined particles with a lithium compound again; calcining the mixture in an oxidizing atmosphere at a temperature range of 600° C. to 800° C., lithium nickel containing composite oxide comprising a layered rock-salt type crystal structure and a peak intensity ratio of (003) plane with respect to (104) plane of 1.2 or more that are obtained by X-ray powder diffraction using Cu-K? ray as an X-ray source is obtained.
    Type: Application
    Filed: October 11, 2016
    Publication date: October 25, 2018
    Inventors: Satoshi KANADA, Katsuya TESHIMA, Nobuyuki ZETTSU, Takeshi KIMIJIMA
  • Patent number: 9744593
    Abstract: A method for producing silver powder wherein a silver solution containing a silver complex and a reductant solution are continuously mixed to provide a reaction liquid, the method including: a step of preparing a silver nucleus solution wherein a silver solution for nucleation which contains a silver complex, a solution containing a strong reductant, and a dispersant are mixed to provide the silver nucleus solution; a step of preparing a reductant solution containing nuclei wherein the silver nucleus solution obtained and a weak reductant having a standard electrode potential higher than that of the strong reductant are mixed to obtain the reductant solution containing nuclei; and a step of growing particles wherein the reductant solution containing nuclei and a silver solution for particle growth containing a silver complex are continuously mixed to provide a reaction solution, in which the silver complex is reduced to thereby grow silver particles.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: August 29, 2017
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Masamu Nishimoto, Yoshihiro Okabe, Satoshi Kanada
  • Publication number: 20150099136
    Abstract: A method for producing silver powder wherein a silver solution containing a silver complex and a reductant solution are continuously mixed to provide a reaction liquid, the method including: a step of preparing a silver nucleus solution wherein a silver solution for nucleation which contains a silver complex, a solution containing a strong reductant, and a dispersant are mixed to provide the silver nucleus solution; a step of preparing a reductant solution containing nuclei wherein the silver nucleus solution obtained and a weak reductant having a standard electrode potential higher than that of the strong reductant are mixed to obtain the reductant solution containing nuclei; and a step of growing particles wherein the reductant solution containing nuclei and a silver solution for particle growth containing a silver complex are continuously mixed to provide a reaction solution, in which the silver complex is reduced to thereby grow silver particles.
    Type: Application
    Filed: February 27, 2013
    Publication date: April 9, 2015
    Inventors: Masamu Nishimoto, Yoshihiro Okabe, Satoshi Kanada