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公开(公告)号：US20250158055A1
公开(公告)日：2025-05-15
申请号：US19028043
申请日：2025-01-17
Inventor： Koh Masahara , Kaoru Nagata , Takaya Tochio , Taizou Sunano , Akihiro Kawakita , Takeshi Ogasawara
Abstract: This positive electrode active material for non-aqueous electrolyte secondary batteries comprises: lithium transition metal oxide particles; a metal compound which contains a metal element M and adheres to the surfaces of the lithium transition metal oxide particles; and a lithium metal compound which contains lithium (Li) and the metal element M and adheres to the surfaces of the lithium transition metal oxide particles. In this connection, the metal element M is composed of at least one substance that is selected from among aluminum (Al), titanium (Ti), manganese (Mn), gallium (Ga), molybdenum (Mo), tin (Sn), tungsten (W) and bismuth (Bi).
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公开(公告)号：US12237505B2
公开(公告)日：2025-02-25
申请号：US16086225
申请日：2017-01-26
Inventor： Koh Masahara , Kaoru Nagata , Takaya Tochio , Taizou Sunano , Akihiro Kawakita , Takeshi Ogasawara
Abstract: This positive electrode active material for non-aqueous electrolyte secondary batteries comprises: lithium transition metal oxide particles; a metal compound which contains a metal element M and adheres to the surfaces of the lithium transition metal oxide particles; and a lithium metal compound which contains lithium (Li) and the metal element M and adheres to the surfaces of the lithium transition metal oxide particles. In this connection, the metal element M is composed of at least one substance that is selected from among aluminum (Al), titanium (Ti), manganese (Mn), gallium (Ga), molybdenum (Mo), tin (Sn), tungsten (W) and bismuth (Bi).
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Patent Agency Ranking
3.发明公开公开(公告)号：US20240162415A1
公开(公告)日：2024-05-16
申请号：US18284686
申请日：2022-03-30
Inventor： Kosuke Kuroda , Youichirou Uka , Koh Masahara , Rina Yamamoto , Tomohiro Harada
CPC classification number: H01M4/364 , H01M4/525 , H01M4/583 , H01M4/623 , H01M2004/028 , H01M4/13 , H01M4/661
Abstract: A disclosed positive electrode for a nonaqueous electrolyte secondary battery includes a positive-electrode current collector and a positive-electrode mixture layer on a surface of the positive-electrode current collector. The positive-electrode mixture layer includes a positive-electrode active material, a conductive material, and binders. The binders include a polyvinylpyrrolidone-based compound and a cellulose derivative.
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公开(公告)号：US20240178396A1
公开(公告)日：2024-05-30
申请号：US18284205
申请日：2022-03-30
Inventor： Kosuke Kuroda , Youichirou Uka , Koh Masahara , Tomohiro Harada , Rina Yamamoto
IPC: H01M4/62 , C09D5/24 , C09D7/40 , C09D7/45 , C09D7/61 , C09D7/65 , C09D139/06 , H01M4/131 , H01M4/525
CPC classification number: H01M4/622 , C09D5/24 , C09D7/45 , C09D7/61 , C09D7/65 , C09D7/70 , C09D139/06 , H01M4/131 , H01M4/525 , H01M4/625
Abstract: A disclosed conductive material dispersion liquid includes a conductive material including carbon nanotubes, dispersants, and a polar aprotic solvent. The dispersants include a polyvinylpyrrolidone-based compound and a cellulose derivative.
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公开(公告)号：US20230163292A1
公开(公告)日：2023-05-25
申请号：US17915051
申请日：2021-03-23
Inventor： Youichirou Uka , Koh Masahara , Tomohiro Harada , Rina Yamamoto , Tomohisa Okazaki
Abstract: This positive electrode for secondary batteries is provided with a positive electrode collector and a positive electrode mixture layer that is arranged on the positive electrode collector. The positive electrode mixture layer contains a positive electrode active material that contains a lithium-transition metal composite oxide and carbon fibers each having an outermost peripheral diameter of 20 nm or less; the lithium-transition metal composite oxide contains 80% by mole or more of Ni relative to the total number of moles of metal elements excluding Li; an alkaline earth metal element is present on the particle surfaces of the oxide; and the content of the carbon fibers relative to the total amount of the positive electrode active material is from 0.01% by mass to 1.0% by mass.
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公开(公告)号：US20230048384A1
公开(公告)日：2023-02-16
申请号：US17788097
申请日：2020-10-13
Inventor： Koh Masahara , Youichirou Uka
IPC: H01M10/0569 , H01M10/052 , H01M4/36 , H01M10/0568 , H01M4/525
Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and an electrolyte solution, wherein the positive electrode includes a composite oxide including lithium as a first metal, and a second metal X other than lithium; in the composite oxide, the second metal X includes Ni, Al, and Mn; the second metal X does not contain Co or the atomic ratio Co/X of Co to the second metal X is 0.02 or less; and the electrolyte solution contains a chain carboxylic acid ester having 2 to 4 carbon atoms, and a cyclic compound having a ring structure composed of 2 oxygen atoms and 3 to 5 carbon atoms.
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公开(公告)号：US20200295366A1
公开(公告)日：2020-09-17
申请号：US16086225
申请日：2017-01-26
Inventor： Koh Masahara , Kaoru Nagata , Takaya Tochio , Taizou Sunano , Akihiro Kawakita , Takeshi Ogasawara
IPC: H01M4/525 , C01G53/00 , H01M10/0525 , H01M4/36
Abstract: This positive electrode active material for non-aqueous electrolyte secondary batteries comprises: lithium transition metal oxide particles; a metal compound which contains a metal element M and adheres to the surfaces of the lithium transition metal oxide particles; and a lithium metal compound which contains lithium (Li) and the metal element M and adheres to the surfaces of the lithium transition metal oxide particles. In this connection, the metal element M is composed of at least one substance that is selected from among aluminum (Al), titanium (Ti), manganese (Mn), gallium (Ga), molybdenum (Mo), tin (Sn), tungsten (W) and bismuth (Bi).
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