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).
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Publication number: 20240136571Abstract: 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: ApplicationFiled: December 26, 2023Publication date: April 25, 2024Inventors: KENTA NAGAMINE, IZURU SASAKI
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Publication number: 20240120582Abstract: 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: ApplicationFiled: December 16, 2023Publication date: April 11, 2024Inventor: KENTA NAGAMINE
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Publication number: 20240113331Abstract: 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: ApplicationFiled: December 12, 2023Publication date: April 4, 2024Inventor: KENTA NAGAMINE
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Patent number: 11764403Abstract: 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: GrantFiled: October 15, 2018Date of Patent: September 19, 2023Assignee: GS Yuasa International Ltd.Inventors: Yudai Kawasoe, Kenta Nagamine, Keisuke Anami
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Patent number: 11710853Abstract: 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: GrantFiled: August 24, 2021Date of Patent: July 25, 2023Assignee: GS Yuasa International Ltd.Inventors: Tetsuhiro Kobayashi, Yudai Kawasoe, Kenta Nagamine
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Publication number: 20230231184Abstract: 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: ApplicationFiled: November 17, 2022Publication date: July 20, 2023Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Panasonic Holdings CorporationInventors: Hiroki YABE, Izuru SASAKI, Kenta NAGAMINE
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Publication number: 20230084047Abstract: 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: ApplicationFiled: October 24, 2022Publication date: March 16, 2023Inventors: Kunihiko MINEYA, Kenta NAGAMINE
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Publication number: 20230080525Abstract: 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: ApplicationFiled: October 14, 2022Publication date: March 16, 2023Inventors: KENTA NAGAMINE, KUNIHIKO MINEYA, IZURU SASAKI
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Publication number: 20230074539Abstract: 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: ApplicationFiled: October 14, 2022Publication date: March 9, 2023Inventors: KENTA NAGAMINE, IZURU SASAKI
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Publication number: 20230066483Abstract: 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: ApplicationFiled: October 14, 2022Publication date: March 2, 2023Inventors: KENTA NAGAMINE, IZURU SASAKI
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Publication number: 20230067002Abstract: 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: ApplicationFiled: October 14, 2022Publication date: March 2, 2023Inventors: Kenta NAGAMINE, Izuru SASAKI
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Publication number: 20220393168Abstract: 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: ApplicationFiled: August 15, 2022Publication date: December 8, 2022Inventors: Kenta NAGAMINE, Izuru SASAKI, Seiji NISHIYAMA
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Patent number: 11489195Abstract: 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: GrantFiled: November 28, 2019Date of Patent: November 1, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Akihiro Sakai, Seiji Nishiyama, Kenta Nagamine
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Publication number: 20220328869Abstract: 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: ApplicationFiled: June 16, 2022Publication date: October 13, 2022Inventors: Kenji NAGAO, Yuta SUGIMOTO, Tatsuya OSHIMA, Kenta NAGAMINE, Akinobu MIYAZAKI, Seiji NISHIYAMA
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Patent number: 11411247Abstract: 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: GrantFiled: March 12, 2020Date of Patent: August 9, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kenta Nagamine, Akihiro Sakai, Tetsuya Asano
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Publication number: 20220209291Abstract: 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: ApplicationFiled: March 18, 2022Publication date: June 30, 2022Inventors: TAKASHI KUBO, KENTA NAGAMINE, KEITA MIZUNO, TETSUYA ASANO, AKIHIRO SAKAI
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Publication number: 20210384555Abstract: 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: ApplicationFiled: August 24, 2021Publication date: December 9, 2021Inventors: Tetsuhiro KOBAYASHI, Yudai KAWASOE, Kenta NAGAMINE
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Publication number: 20210280907Abstract: 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: ApplicationFiled: May 25, 2021Publication date: September 9, 2021Inventors: NORIHITO FUJINOKI, MASASHI SAKAIDA, KENTA NAGAMINE, AKIHIRO SAKAI, AKINOBU MIYAZAKI
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Publication number: 20210273259Abstract: 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: ApplicationFiled: May 21, 2021Publication date: September 2, 2021Inventors: KENTA NAGAMINE, AKIHIRO SAKAI
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Patent number: 10902610Abstract: 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: GrantFiled: December 19, 2018Date of Patent: January 26, 2021Assignees: MEGACHIPS CORPORATION, KYUSHU INSTITUTE OF TECHNOLOGYInventors: Kenta Nagamine, Norikazu Ikoma, Fumiya Shingu, Hiromu Hasegawa