Patents by Inventor HIROKI KAMITAKE
HIROKI KAMITAKE 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: 20240063505Abstract: An outer casing includes a housing configured to house a battery, a gas adsorbing unit disposed outside the housing and including an adsorbent that can adsorb a first gas generated inside the housing, and a first valve configured to discharge the first gas from the gas adsorbing unit to outside of the outer casing. The first valve may be connected to the gas adsorbing unit. A battery module includes the outer casing and a battery disposed in the housing of the outer casing.Type: ApplicationFiled: October 27, 2023Publication date: February 22, 2024Inventors: HIROKI KAMITAKE, KAZUHIRO MORIOKA, SEIJI NISHIYAMA
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Publication number: 20240047656Abstract: An electrode includes an active material layer. The active material layer includes a composite particle and an imidazoline-based compound. The composite particle includes a core particle and a covering layer. The covering layer covers at least part of a surface of the core particle. The core particle includes an active material. The covering layer includes a first layer and a second layer. At least part of the first layer is interposed between the core particle and the second layer. The first layer includes a first solid electrolyte. The second layer includes a second solid electrolyte. The first solid electrolyte is a fluoride. The second solid electrolyte is a sulfide.Type: ApplicationFiled: June 29, 2023Publication date: February 8, 2024Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Panasonic Holdings CorporationInventors: Kazuya HASHIMOTO, Hiroki YABE, Izuru SASAKI, Hiroki KAMITAKE, Yuta SUGIMOTO
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Publication number: 20240006577Abstract: An active material, a solid electrolyte, and a solvent are hard-kneaded to prepare a first electrode material. A dispersion promotion component is added to the first electrode material to prepare a second electrode material. Slurry containing the second electrode material is prepared. An electrode is produced by applying the slurry to a surface of a base material. A composite body is formed by the solid electrolyte adhering to a surface of the active material. The dispersion promotion component promotes dispersion of the solid electrolyte in the solvent.Type: ApplicationFiled: June 16, 2023Publication date: January 4, 2024Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Panasonic Holdings CorporationInventors: Norihiro OSE, Kazuki MURAISHI, Hiroki YABE, Izuru SASAKI, Hiroki KAMITAKE
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Publication number: 20230238515Abstract: A positive electrode includes a positive electrode current collector, an adhesive layer, and a positive electrode layer. The positive electrode current collector, the adhesive layer, and the positive electrode layer are stacked in this order. The adhesive layer contains spherical carbon and fibrous carbon as an electrically conductive material, and contains an acrylic binder as an adhesive.Type: ApplicationFiled: December 9, 2022Publication date: July 27, 2023Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Panasonic Holdings CorporationInventors: Ryuto SAKAMOTO, Kenji NAGAO, Izuru SASAKI, Yusuke NISHIO, Hiroki KAMITAKE
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Publication number: 20230231122Abstract: There is provided an electrode layer for an all-solid state battery, which contains an electrode active material and a sulfide solid electrolyte, where the sulfide solid electrolyte has an average particle diameter of less than 1 µm and the electrode layer contains an imidazoline-based dispersion material.Type: ApplicationFiled: October 28, 2022Publication date: July 20, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akio MITSUI, Yasunari SUGITA, Kenji NAGAO, Izuru SASAKI, Yasutaka TSUTSUI, Takaaki TAMURA, Hiroki KAMITAKE
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Patent number: 11682764Abstract: The present disclosure provides a cathode material which has improved charge/discharge efficiency; and a battery using the same. The cathode material includes a cathode active material and a first solid electrolyte material; and the first solid electrolyte material contains Li, M and X; however, does not include sulfur. M represents at least one element that is selected from the group consisting of metalloid elements and metal elements other than Li. X represents at least one selected from the group consisting of Cl and Br, and I. The cathode active material includes lithium iron phosphate.Type: GrantFiled: July 16, 2020Date of Patent: June 20, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Hiroki Kamitake, Akihiro Sakai, Izuru Sasaki, Yuta Sugimoto, Akinobu Miyazaki
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Publication number: 20230098705Abstract: A negative electrode active material of the present disclosure includes: a graphite particle having a void inside; and a first solid electrolyte. The void has a void size of 1 nm or more and 300 nm or less. The first solid electrolyte is present in the void. The graphite particle has, for example, a plurality of voids inside. The graphite particle has an average void size, determined by a mercury intrusion method, of, for example, 1 nm or more and 300 nm or less.Type: ApplicationFiled: November 29, 2022Publication date: March 30, 2023Inventors: Hiroki YABE, Yusuke ITO, Hiroki KAMITAKE
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Publication number: 20230093244Abstract: A solid-state battery of the present disclosure includes: a negative electrode layer including a negative electrode active material; a positive electrode layer; a solid electrolyte layer positioned between the positive electrode layer and the negative electrode layer. The negative electrode active material includes: a graphite particle being an aggregate of a plurality of primary particles including graphite, the graphite particle having a void inside; and a solid electrolyte being present in the void. At least a portion of the void may be filled with the solid electrolyte. The void has a minimum diameter of, for example, 1 nm or more and 70 nm or less.Type: ApplicationFiled: November 29, 2022Publication date: March 23, 2023Inventors: Hiroki YABE, Hiroki KAMITAKE, Yusuke ITO
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Publication number: 20230006208Abstract: A positive-electrode material according to the present disclosure includes a positive-electrode active material and a coating layer covering the positive-electrode active material, wherein the coating layer contains oxygen and lithium, the positive-electrode active material and the coating layer constitute a coated active material, and the ratio Li/O of the lithium content to the oxygen content in a surface layer portion of the coated active material is 0.26 or less based on the atomic ratio.Type: ApplicationFiled: September 8, 2022Publication date: January 5, 2023Inventors: HIROKI KAMITAKE, SEIJI NISHIYAMA, IZURU SASAKI
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Publication number: 20230006196Abstract: A positive-electrode material according to the present disclosure includes a positive-electrode active material and a coating layer covering the positive-electrode active material, wherein the coating layer contains lithium and carbon, the positive-electrode active material and the coating layer constitute a coated active material, and the ratio C/Li of the carbon content to the lithium content in a surface layer portion of the coated active material is 3.27 or more based on the atomic ratio.Type: ApplicationFiled: September 8, 2022Publication date: January 5, 2023Inventors: HIROKI KAMITAKE, SEIJI NISHIYAMA, IZURU SASAKI
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Publication number: 20220416297Abstract: A positive-electrode material according to the present disclosure includes a positive-electrode active material and a coating layer covering the positive-electrode active material, wherein the coating layer contains niobium and carbon, the positive-electrode active material and the coating layer constitute a coated active material, and the ratio Nb/C of the niobium content to the carbon content in a surface layer portion of the coated active material is 0.11 or more based on the atomic ratio.Type: ApplicationFiled: September 6, 2022Publication date: December 29, 2022Inventors: HIROKI KAMITAKE, IZURU SASAKI, SEIJI NISHIYAMA
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Publication number: 20220416219Abstract: An electrode material of the present disclosure includes an active material and a solid electrolyte. The length of an interface between the active material and the solid electrolyte per unit area of the cross section of the electrode material is 0.29 ?m/?m2 or more, and the filling rate of the electrode material is 80% or more. A battery of the present disclosure includes a first electrode, a second electrode, and an electrolyte layer positioned between the first electrode and the second electrode. At least one selected from the group consisting of the first electrode and the second electrode includes the electrode material of the present disclosure.Type: ApplicationFiled: August 30, 2022Publication date: December 29, 2022Inventors: Hiroki KAMITAKE, Kunihiko MINEYA, Ayumu FUKUOKA
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Publication number: 20210218054Abstract: A battery includes a positive electrode, a negative electrode, and an electrolyte layer disposed between the positive electrode and the negative electrode. The electrolyte layer includes a first layer, a second layer, and a mixture layer disposed between the first layer and the second layer. The first layer includes a first solid electrolyte material. The second layer includes a second solid electrolyte material, the second solid electrolyte material being different from the first solid electrolyte material. The mixture layer includes the first solid electrolyte material and the second solid electrolyte material.Type: ApplicationFiled: March 29, 2021Publication date: July 15, 2021Inventors: TATSUYA OSHIMA, IZURU SASAKI, HIROKI KAMITAKE, AKIRA KAWASE
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Publication number: 20200350561Abstract: The present disclosure provides a cathode material which has improved charge/discharge efficiency; and a battery using the same. The cathode material includes a cathode active material and a first solid electrolyte material; and the first solid electrolyte material contains Li, M and X; however, does not include sulfur. M represents at least one element that is selected from the group consisting of metalloid elements and metal elements other than Li. X represents at least one selected from the group consisting of Cl and Br, and I. The cathode active material includes lithium iron phosphate.Type: ApplicationFiled: July 16, 2020Publication date: November 5, 2020Inventors: HIROKI KAMITAKE, AKIHIRO SAKAI, IZURU SASAKI, YUTA SUGIMOTO, AKINOBU MIYAZAKI