Patents by Inventor Kenta Nagamine

Kenta Nagamine 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: 20240136571
    Abstract: A positive electrode material includes a positive electrode active material and a solid electrolyte. The oxidation potential of the solid electrolyte is higher than or equal to 3.9 V versus Li/Li+. The ratio of the volume of the solid electrolyte to the volume of the positive electrode material is in a range of greater than or equal to 8% and less than or equal to 25%. A battery of the present disclosure includes a positive electrode containing the positive electrode material, a negative electrode, and an electrolyte layer disposed between the positive electrode and the negative electrode.
    Type: Application
    Filed: December 26, 2023
    Publication date: April 25, 2024
    Inventors: KENTA NAGAMINE, IZURU SASAKI
  • Publication number: 20240120582
    Abstract: A battery includes a power generator, and a covering material that covers the power generator, in which the power generator includes a positive electrode layer, a negative electrode layer, and a solid electrolyte layer positioned between the positive electrode layer and the negative electrode layer, at least one selected from the group consisting of the positive electrode layer, the solid electrolyte layer, and the negative electrode layer contains a solid electrolyte containing halogen, the covering material includes a base layer, a resin layer, and an interlayer positioned between the base layer and the resin layer, and the resin layer is disposed on a side facing the power generator and contains a halogen-containing polymer.
    Type: Application
    Filed: December 16, 2023
    Publication date: April 11, 2024
    Inventor: KENTA NAGAMINE
  • Publication number: 20240113331
    Abstract: A battery includes a power generator and a covering body covering the power generator. The power generator includes a positive electrode layer, a negative electrode layer, and a solid electrolyte layer positioned between the positive electrode layer and the negative electrode layer. At least one selected from the group consisting of the positive electrode layer, the solid electrolyte layer, and the negative electrode layer contains a halogen-containing solid electrolyte. The covering body includes a base material layer, a resin layer, and a metal layer positioned between the base material layer and the resin layer. The resin layer is disposed so as to face the power generator and contains a halogen-containing polymer.
    Type: Application
    Filed: December 12, 2023
    Publication date: April 4, 2024
    Inventor: KENTA NAGAMINE
  • Patent number: 11764403
    Abstract: A nonaqueous electrolyte secondary battery disclosed herein includes a positive electrode plate including a positive composite layer, a negative electrode plate including a negative composite layer, and a nonaqueous electrolyte, in which the negative composite layer is composed of a facing portion facing a surface of the positive composite layer, and a non-facing portion that is on the same surface as the facing portion and does not face the surface of the positive composite layer, and the area ratio of the non-facing portion to a combined area of the facing portion and the non-facing portion of the negative composite layer is 7% or more, and the nonaqueous electrolyte contains a fluorinated carbonate and a cyclic sulfone compound.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: September 19, 2023
    Assignee: GS Yuasa International Ltd.
    Inventors: Yudai Kawasoe, Kenta Nagamine, Keisuke Anami
  • Patent number: 11710853
    Abstract: Provided are a nonaqueous electrolyte capable of providing a nonaqueous electrolyte energy storage device with reduced direct current resistance and an increased capacity retention ratio after charge-discharge cycles, a nonaqueous electrolyte energy storage device including such a nonaqueous electrolyte, and a method for producing such a nonaqueous electrolyte energy storage device. One mode of the present invention is a nonaqueous electrolyte for an energy storage device, containing an additive represented by the following Formula (1) or Formula (2). In Formula (1), R1 to R4 are each independently a hydrogen atom or a group represented by —NRa2, —ORa, —SRa, etc., with the proviso that at least one of R1 to R4 is a group represented by —ORa, —SRa, —COORa, —CORa, —SO2Ra, or —SO3Ra. In Formula (2), R5 to R7 are each independently a hydrogen atom or a group represented by —NRb2, —ORb, or —SRb, with the proviso that at least one of R5 to R7 is a group represented by —SRb.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: July 25, 2023
    Assignee: GS Yuasa International Ltd.
    Inventors: Tetsuhiro Kobayashi, Yudai Kawasoe, Kenta Nagamine
  • Publication number: 20230231184
    Abstract: A solid electrolyte includes lithium, phosphorus, sulfur, and halogen, in which, when the solid electrolyte is measured by TG-MS, a first peak derived from cyclic sulfur appears in a temperature range of 170° C. or higher and lower than 250° C., a second peak derived from the cyclic sulfur appears in a temperature range of 250° C. or higher and lower than 300° C., and a peak intensity P1 of the first peak is higher than a peak intensity P2 of the second peak.
    Type: Application
    Filed: November 17, 2022
    Publication date: July 20, 2023
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Panasonic Holdings Corporation
    Inventors: Hiroki YABE, Izuru SASAKI, Kenta NAGAMINE
  • Publication number: 20230084047
    Abstract: A negative electrode material of the present disclosure includes a negative electrode active material, a solid electrolyte, and a coating material coating the negative electrode active material. The coating material is represented by the following composition formula (1), where a, b, and c are each a positive real number, A is at least one selected from the group consisting of P and S, and X is F and O.
    Type: Application
    Filed: October 24, 2022
    Publication date: March 16, 2023
    Inventors: Kunihiko MINEYA, Kenta NAGAMINE
  • Publication number: 20230080525
    Abstract: A positive electrode material contains a positive electrode active material, a solid electrolyte, and a coating material for coating the positive electrode active material, wherein the coating material is denoted by Composition formula (1) below. LiaAbXc (1). Herein, each of a, b, and c is a positive real number, A is at least one selected from the group consisting of N, P, and S, and X contains at least F.
    Type: Application
    Filed: October 14, 2022
    Publication date: March 16, 2023
    Inventors: KENTA NAGAMINE, KUNIHIKO MINEYA, IZURU SASAKI
  • Publication number: 20230074539
    Abstract: Provided is a positive electrode material including a first solid electrolyte, a positive electrode active material, and a coating material at least partially coating a surface of the positive electrode active material. The first solid electrolyte is represented by the following compositional formula (1): LiaMbXc. In the compositional formula (1), a, b, and c are positive real numbers and satisfy a mathematical expression: a+b<c; M is at least one selected from the group consisting of metallic elements excluding Li and metalloid elements; and X is at least one selected from the group consisting of F, Cl, Br, and I. The coating material includes an oxoacid salt of a non-metal or metalloid cation.
    Type: Application
    Filed: October 14, 2022
    Publication date: March 9, 2023
    Inventors: KENTA NAGAMINE, IZURU SASAKI
  • Publication number: 20230066483
    Abstract: The positive electrode material according to an aspect of the present disclosure includes a first solid electrolyte, a positive electrode active material, and a coating material coating the surface of the positive electrode active material. The first solid electrolyte is represented by the following compositional formula: LiaMbOcXd. In the compositional formula, a, b, c, and d are positive real numbers; M is at least one selected from the group consisting of Ta and Nb; and X is at least one selected from the group consisting of Cl, Br, and I.
    Type: Application
    Filed: October 14, 2022
    Publication date: March 2, 2023
    Inventors: KENTA NAGAMINE, IZURU SASAKI
  • Publication number: 20230067002
    Abstract: A battery of the present disclosure includes a positive electrode, a negative electrode, and an electrolyte layer provided between the positive electrode and the negative electrode. The positive electrode contains a positive electrode active material and a first solid electrolyte. The electrolyte layer contains a second solid electrolyte. The first solid electrolyte contains lithium and two or more types of anions. The second solid electrolyte contains lithium and two or more types of anions. The molar ratio of Br to the two or more types of anions contained in the first solid electrolyte is smaller than the molar ratio of Br to the two or more types of anions contained in the second solid electrolyte.
    Type: Application
    Filed: October 14, 2022
    Publication date: March 2, 2023
    Inventors: Kenta NAGAMINE, Izuru SASAKI
  • Publication number: 20220393168
    Abstract: A positive electrode material of the present disclosure includes: a material represented by the following composition formula (1); and a carbon material capable of occluding at least one selected from the group consisting of a simple substance of halogen and a halide, LiaMbXc . . . Formula (1) where a, b, and c are each a value greater than 0, M includes at least one selected from the group consisting of metal elements other than Li and metalloid elements, and X includes a halogen element.
    Type: Application
    Filed: August 15, 2022
    Publication date: December 8, 2022
    Inventors: Kenta NAGAMINE, Izuru SASAKI, Seiji NISHIYAMA
  • Patent number: 11489195
    Abstract: A solid electrolyte material is composed of Li, M, and X, where M is at least one kind of element selected from the group consisting of metalloid elements and metallic elements other than Li, and X is at least one kind of element selected from the group consisting of F, Cl, Br and I. In the solid electrolyte material, the mathematical formula FWHM/2?p?0.015 is satisfied, where FWHM represents a half bandwidth of an X-ray diffraction peak having the highest intensity within a range of a diffraction angle 2? of not less than 25 degrees and not more than 35 degrees in an X-ray diffraction pattern provided by an X-ray diffraction measurement of the solid electrolyte material; the X-ray diffraction measurement using a Cu-K? ray; and 2?p represents a diffraction angle of a center of the X-ray diffraction peak.
    Type: Grant
    Filed: November 28, 2019
    Date of Patent: November 1, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akihiro Sakai, Seiji Nishiyama, Kenta Nagamine
  • Publication number: 20220328869
    Abstract: A battery including a first and second electrode layer, and an electrolyte layer including a first solid electrolyte material. The battery satisfies (A), (B), (C), or (D). (A) The current collector layer has, in at least a partial region thereof, a copper content of less than 50 mass %. (B) At least one selected from the group of the current collector layer and an electrode lead has, in at least a partial region thereof, a copper content of less than 50 mass %. (C) At least one selected from the group of the current collector layer and an exterior body has, in at least a partial region thereof, a copper content of less than 50 mass %. (D) at least one selected from the group of the current collector layer, the electrode lead, and the exterior body has, in at least a partial region thereof, a copper content of less than 50 mass %.
    Type: Application
    Filed: June 16, 2022
    Publication date: October 13, 2022
    Inventors: Kenji NAGAO, Yuta SUGIMOTO, Tatsuya OSHIMA, Kenta NAGAMINE, Akinobu MIYAZAKI, Seiji NISHIYAMA
  • Patent number: 11411247
    Abstract: Provided is a solid electrolyte material represented by the following composition formula (1): Li3?3d(Y1?xMx)1+dX6??Formula (1) where M is an element having an ionic radius larger than that of Y; X is at least one kind of element selected from the group consisting of F, Cl, Br and I; 0<x?1; and ?0.15?d?0.15.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: August 9, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kenta Nagamine, Akihiro Sakai, Tetsuya Asano
  • Publication number: 20220209291
    Abstract: A solid electrolyte material includes Li, Ca, Y, Gd, and X wherein X is at least one element selected from the group consisting of F, Cl, Br, and I. A battery uses the solid electrolyte material.
    Type: Application
    Filed: March 18, 2022
    Publication date: June 30, 2022
    Inventors: TAKASHI KUBO, KENTA NAGAMINE, KEITA MIZUNO, TETSUYA ASANO, AKIHIRO SAKAI
  • Publication number: 20210384555
    Abstract: Provided are a nonaqueous electrolyte capable of providing a nonaqueous electrolyte energy storage device with reduced direct current resistance and an increased capacity retention ratio after charge-discharge cycles, a nonaqueous electrolyte energy storage device including such a nonaqueous electrolyte, and a method for producing such a nonaqueous electrolyte energy storage device. One mode of the present invention is a nonaqueous electrolyte for an energy storage device, containing an additive represented by the following Formula (1) or Formula (2). In Formula (1), R1 to R4 are each independently a hydrogen atom or a group represented by —NRa2, —ORa, —SRa, etc., with the proviso that at least one of R1 to R4 is a group represented by —ORa, —SRa, —COORa, —CORa, —SO2Ra, or —SO3Ra. In Formula (2), R5 to R7 are each independently a hydrogen atom or a group represented by —NRb2, —ORb, or —SRb, with the proviso that at least one of R5 to R7 is a group represented by —SRb.
    Type: Application
    Filed: August 24, 2021
    Publication date: December 9, 2021
    Inventors: Tetsuhiro KOBAYASHI, Yudai KAWASOE, Kenta NAGAMINE
  • Publication number: 20210280907
    Abstract: A solid electrolyte consists essentially of Li, M, and X. M includes at least one element selected from the group consisting of Gd, Tb, and Sm. X is at least one element selected from the group consisting of Cl, Br, and I.
    Type: Application
    Filed: May 25, 2021
    Publication date: September 9, 2021
    Inventors: NORIHITO FUJINOKI, MASASHI SAKAIDA, KENTA NAGAMINE, AKIHIRO SAKAI, AKINOBU MIYAZAKI
  • Publication number: 20210273259
    Abstract: A solid electrolyte material is composed of Li, M, and X. M is at least one selected from the group consisting of metal elements other than Li and metalloids. X is at least one selected from the group consisting of F, Cl, Br, and I. FWHM/2?p?0.015 is satisfied, wherein FWHM represents a half width of an X-ray diffraction peak in an X-ray diffraction pattern obtained by performing X-ray diffraction measurement on the solid electrolyte material by using Cu-K? radiation, the X-ray diffraction peak having the highest intensity within a range of diffraction angles 2? greater than or equal to 25° and less than or equal to 35°, and 2?p represents a diffraction angle at a center of the X-ray diffraction peak.
    Type: Application
    Filed: May 21, 2021
    Publication date: September 2, 2021
    Inventors: KENTA NAGAMINE, AKIHIRO SAKAI
  • Patent number: 10902610
    Abstract: The position of a moving object is estimated with high accuracy using landmark information, and highly accurate state estimation is performed appropriately at high speed. A landmark detection unit obtains a distance between the moving object and each of two or more landmarks as landmark distance information based on observation data obtained by an observation obtaining unit. A candidate area obtaining unit determines a candidate area for a position of the moving object based on the landmark distance information obtained by the landmark detection unit, and obtains candidate area information indicating the determined candidate area. A state estimation unit estimates an internal state of the moving object based on the observation data, the landmark distance information, and the candidate area information to obtain moving object internal state estimation data, and estimates the environmental map based on the candidate area information and the landmark distance information to obtain environmental map data.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: January 26, 2021
    Assignees: MEGACHIPS CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGY
    Inventors: Kenta Nagamine, Norikazu Ikoma, Fumiya Shingu, Hiromu Hasegawa