Patents by Inventor Gakuho ISOMICHI

Gakuho ISOMICHI 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: 20220294010
    Abstract: A solid electrolyte layer includes a solid electrolyte and a compound represented by a composition formula MxZr2(PO4)y. In the composition formula, M represents at least one selected from the group consisting of Na, K, Mg, Ca, Sr, Ba, Cu, Zn, and Ni, x satisfies 0<x?2.5, and y satisfies 2.7?y?3.5.
    Type: Application
    Filed: August 31, 2020
    Publication date: September 15, 2022
    Applicant: TDK CORPORATION
    Inventors: Gakuho ISOMICHI, Haruna KATO, Tetsuya UENO
  • Patent number: 11411244
    Abstract: A solid electrolyte according to an embodiment includes a lithium-containing phosphoric acid compound with a cubic crystal structure.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: August 9, 2022
    Assignee: TDK CORPORATION
    Inventors: Gakuho Isomichi, Tetsuya Ueno
  • Patent number: 11374261
    Abstract: An electrochemical device has a laminated body including: a positive electrode; a negative electrode; and a solid electrolyte sandwiched between the positive electrode and the negative electrode, wherein the laminated body contains water, a content of the water contained in the laminated body is 0.001 mass % or more and less than 0.3 mass % with respect to the laminated body, a part of the water is a bound water bonding with a constituent of the laminated body, and a ratio of the bound water in the water is 50% or more and 90% or less.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: June 28, 2022
    Assignee: TDK CORPORATION
    Inventors: Masahiro Oishi, Hisaji Oyake, Hiroshi Sato, Hiroko Takayanagi, Gakuho Isomichi
  • Patent number: 11349146
    Abstract: An all-solid lithium ion secondary battery has a pair of electrode layers and a solid electrolyte layer between the pair of electrode layers. In the all-solid lithium ion secondary battery, at least one electrode of the pair of electrodes has an active material layer and an intermediate layer on the surface of the active material layer on the side of the solid electrolyte layer, and each of the solid electrolyte layer, the intermediate layer, and the active material layer includes a compound containing Li and two or more shared types of metal elements other than Li, the two or more shared types of metal elements in the solid electrolyte layer, the intermediate layer, and the active material layer are identical between the solid electrolyte layer, the intermediate layer, and the active material layer.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: May 31, 2022
    Assignee: TDK CORPORATION
    Inventors: Hiroshi Sato, Masahiro Oishi, Takeo Tsukada, Gakuho Isomichi, Tetsuya Ueno
  • Publication number: 20210043978
    Abstract: An all-solid-state secondary battery includes: a positive electrode active material layer; a negative electrode active material layer; and a solid electrolyte layer located between the positive electrode active material layer and the negative electrode active material layer, wherein at least one of the positive electrode active material layer and the negative electrode active material layer contains lithium vanadium phosphate, the solid electrolyte layer contains lithium zirconium phosphate, and between the positive electrode active material layer or the negative electrode active material layer containing lithium vanadium phosphate and the solid electrolyte layer, a first intermediate layer, which contains lithium vanadium phosphate containing zirconium and is located on the side of the positive electrode active material layer or the negative electrode active material layer, and a second intermediate layer, which contains lithium zirconium phosphate containing vanadium and is located on the side of the solid
    Type: Application
    Filed: March 22, 2019
    Publication date: February 11, 2021
    Applicant: TDK CORPORATION
    Inventors: Keiko TAKEUCHI, Tetsuya UENO, Gakuho ISOMICHI
  • Publication number: 20210036362
    Abstract: An all-solid-state battery includes a positive electrode current collector layer; a positive electrode active material layer; a negative electrode current collector layer; a negative electrode active material layer; a solid electrolyte layer disposed between the positive electrode active material layer and the negative electrode active material layer and formed of a solid electrolyte; and at least one of a first intermediate layer formed between the positive electrode current collector layer and the positive electrode active material layer, and a second intermediate layer formed between the negative electrode current collector layer and the negative electrode active material layer.
    Type: Application
    Filed: March 27, 2019
    Publication date: February 4, 2021
    Applicant: TDK CORPORATION
    Inventors: Tetsuya UENO, Gakuho ISOMICHI, Keiko TAKEUCHI
  • Publication number: 20200381774
    Abstract: An all-solid-state battery includes a positive electrode layer including a positive electrode current collector layer and a positive electrode active material layer provided on the positive electrode current collector layer, a negative electrode layer including a negative electrode current collector layer and a negative electrode active material layer provided on the negative electrode current collector layer, and a solid electrolyte layer which is arranged between the positive electrode layer and the negative electrode layer and contains a solid electrolyte, wherein the all-solid-state battery includes a power storage unit in which the positive electrode layer and the negative electrode layer face each other with the solid electrolyte layer therebetween and an exterior unit, and wherein the exterior unit has an ion conductivity of 10?2 S/cm or less.
    Type: Application
    Filed: March 19, 2019
    Publication date: December 3, 2020
    Applicant: TDK CORPORATION
    Inventors: Tetsuya UENO, Gakuho ISOMICHI, Taisuke MASUKO
  • Patent number: 10854917
    Abstract: An active material layer containing a compound represented by a general formula (1): LiaVbAlcTidPeO12 (1), where a, b, c, d, and e in the general formula (1) are numbers satisfying 0.5?a?3.0, 1.20<b?2.00, 0.01?c<0.06, 0.01?d<0.60, and 2.80?e?3.20; and a solid electrolyte layer containing a compound represented by a general formula (2): LifVgAlhTiiPjO12 (2), where f, g, h, i, and j in general formula (2) are numbers satisfying 0.5?f?3.0, 0.01?g<1.00, 0.09<h?0.30, 1.40<i?2.00, and 2.80?j?3.20.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: December 1, 2020
    Assignee: TDK CORPORATION
    Inventors: Hiroshi Sato, Masahiro Oishi, Takeo Tsukada, Gakuho Isomichi, Tetsuya Ueno
  • Publication number: 20200075994
    Abstract: A solid electrolyte, in which an occupied impurity level that is formed by a part of elements contained in a mobile ion-containing material being substituted and that is occupied by electrons is included in a band gap of the mobile ion-containing material, and an amount of charge retention per composition formula of the occupied impurity level is equal to or greater than an amount of charge retention of mobile ions per composition formula of the mobile ion-containing material.
    Type: Application
    Filed: March 29, 2018
    Publication date: March 5, 2020
    Applicant: TDK CORPORATION
    Inventors: Takashi SASAKI, Tetsuya UENO, Gakuho ISOMICHI
  • Publication number: 20200020978
    Abstract: This solid electrolyte is a zirconium phosphate-based solid electrolyte in which a part of phosphorous or zirconium that is contained in the solid electrolyte is substituted with an element with a variable valence.
    Type: Application
    Filed: March 29, 2018
    Publication date: January 16, 2020
    Applicant: TDK CORPORATION
    Inventors: Takashi SASAKI, Tetsuya UENO, Gakuho ISOMICHI
  • Publication number: 20200020976
    Abstract: A solid electrolyte according to an embodiment includes a lithium-containing phosphoric acid compound with a cubic crystal structure.
    Type: Application
    Filed: March 29, 2018
    Publication date: January 16, 2020
    Applicant: TDK CORPORATION
    Inventors: Gakuho ISOMICHI, Tetsuya UENO
  • Publication number: 20200014070
    Abstract: An electrochemical device has a laminated body including: a positive electrode; a negative electrode; and a solid electrolyte sandwiched between the positive electrode and the negative electrode, wherein the laminated body contains water, a content of the water contained in the laminated body is 0.001 mass % or more and less than 0.3 mass % with respect to the laminated body, a part of the water is a bound water bonding with a constituent of the laminated body, and a ratio of the bound water in the water is 50% or more and 90% or less.
    Type: Application
    Filed: August 4, 2017
    Publication date: January 9, 2020
    Applicant: TDK CORPORATION
    Inventors: Masahiro OISHI, Hisaji OYAKE, Hiroshi SATO, Hiroko TAKAYANAGI, Gakuho ISOMICHI
  • Publication number: 20200010369
    Abstract: A solid electrolyte, in which a part of an element contained in a mobile ion-containing material is substituted, and an occupied impurity level that is occupied by electrons or an unoccupied impurity level that is not occupied by electrons is provided between a valence electron band and a conduction band of the mobile ion-containing material, and a smaller energy difference out of an energy difference between a highest level of energy in the occupied impurity level and an energy and a LUMO level difference between a lowest level of energy in the unoccupied impurity level and a HOMO level is greater than 0.3 eV.
    Type: Application
    Filed: March 29, 2018
    Publication date: January 9, 2020
    Applicant: TDK CORPORATION
    Inventors: Takashi SASAKI, Tetsuya UENO, Gakuho ISOMICHI
  • Publication number: 20190280327
    Abstract: An all-solid lithium ion secondary battery has a pair of electrode layers and a solid electrolyte layer between the pair of electrode layers. In the all-solid lithium ion secondary battery, at least one electrode of the pair of electrodes has an active material layer and an intermediate layer on the surface of the active material layer on the side of the solid electrolyte layer, and each of the solid electrolyte layer, the intermediate layer, and the active material layer includes a compound containing Li and two or more shared types of metal elements other than Li, the two or more shared types of metal elements in the solid electrolyte layer, the intermediate layer, and the active material layer are identical between the solid electrolyte layer, the intermediate layer, and the active material layer.
    Type: Application
    Filed: September 25, 2017
    Publication date: September 12, 2019
    Applicant: TDK CORPORATION
    Inventors: Hiroshi SATO, Masahiro OISHI, Takeo TSUKADA, Gakuho ISOMICHI, Tetsuya UENO
  • Publication number: 20190252720
    Abstract: An active material layer containing a compound represented by a general formula (1): LiaVbAlcTidPeO12 (1), where a, b, c, d, and e in the general formula (1) are numbers satisfying 0.5?a?3.0, 1.20<b?2.00, 0.01?c<0.06, 0.01?d<0.60, and 2.80?e?3.20; and a solid electrolyte layer containing a compound represented by a general formula (2): LifVgAlhTiiPjO12 (2), where f, g, h, i, and j in general formula (2) are numbers satisfying 0.5?f?3.0, 0.01?g<1.00, 0.09<h?0.30, 1.40<i?2.00, and 2.80?j?3.20.
    Type: Application
    Filed: September 25, 2017
    Publication date: August 15, 2019
    Applicant: TDK CORPORATION
    Inventors: Hiroshi SATO, Masahiro OISHI, Takeo TSUKADA, Gakuho ISOMICHI, Tetsuya UENO