Patents by Inventor Yuso ISHIDA

Yuso ISHIDA 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).

  • Gallium-substituted solid electrolyte material, and all-solid-state lithium ion secondary battery
    Patent number: 12206068
    Abstract: Provided is a novel solid electrolyte material of high density and high ionic conductivity, and an all-solid-state lithium ion secondary battery that utilizes the solid electrolyte material. The solid electrolyte material has a chemical composition represented by Li7-3xGaxLa3Zr2O12 (0.08?x<0.5), has a relative density of 99% or higher, belongs to space group I-43d, in the cubic system, and has a garnet-type structure. The lithium ion conductivity of the solid electrolyte material is 2.0×10?3 S/cm or higher. The solid electrolyte material has a lattice constant a such that 1.29 nm?a?1.30 nm, and lithium ions occupy the 12a site, the 12b site and two types of 48e site, and gallium occupies the 12a site and the 12b site, in the crystal structure. The all-solid-state lithium ion secondary battery has a positive electrode, a negative electrode, and a solid electrolyte. The solid electrolyte is made up of the solid electrolyte material of the present invention.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: January 21, 2025
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Kunimitsu Kataoka, Junji Akimoto, Yuso Ishida, Tomoki Ariga
  • GALLIUM-SUBSTITUTED SOLID ELECTROLYTE MATERIAL, AND ALL-SOLID-STATE LITHIUM ION SECONDARY BATTERY
    Publication number: 20220320578
    Abstract: Provided is a novel solid electrolyte material of high density and high ionic conductivity, and an all-solid-state lithium ion secondary battery that utilizes the solid electrolyte material. The solid electrolyte material has a chemical composition represented by Li7-3xGaxLa3Zr2O12 (0.08?x<0.5), has a relative density of 99% or higher, belongs to space group I-43d, in the cubic system, and has a garnet-type structure. The lithium ion conductivity of the solid electrolyte material is 2.0×10?3 S/cm or higher. The solid electrolyte material has a lattice constant a such that 1.29 nm?a?1.30 nm, and lithium ions occupy the 12a site, the 12b site and two types of 48e site, and gallium occupies the 12a site and the 12b site, in the crystal structure. The all-solid-state lithium ion secondary battery has a positive electrode, a negative electrode, and a solid electrolyte. The solid electrolyte is made up of the solid electrolyte material of the present invention.
    Type: Application
    Filed: June 26, 2020
    Publication date: October 6, 2022
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Kunimitsu KATAOKA, Junji AKIMOTO, Yuso ISHIDA, Tomoki ARIGA