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公开(公告)号：US20240055585A1
公开(公告)日：2024-02-15
申请号：US18273178
申请日：2022-01-19
Inventor： Akiko Murata , Hiroshi Kawada
CPC classification number: H01M4/382 , H01M4/525 , H01M4/505 , H01M2004/028
Abstract: Provided is an active material that can suppress a rise in the internal resistance of a battery. This active material for nonaqueous electrolyte secondary batteries contains a core that can reversibly store and release Li, and a compound adhered to the surface of the core, and the compound contains trivalent Ti. The compound may be (NH4)2TiF5, for example.
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公开(公告)号：US20220344644A1
公开(公告)日：2022-10-27
申请号：US17763930
申请日：2020-09-29
Inventor： Hiroshi Kawada , Mitsuhiro Hibino
Abstract: A positive electrode active material for nonaqueous electrolyte secondary batteries according to the present invention comprises: a lithium transition metal composite oxide which has a spinel structure; and a coating layer which is provided on the surface of the lithium transition metal composite oxide, while having a spinel structure, and which contains Li but does not contain Mn.
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公开(公告)号：US20210296646A1
公开(公告)日：2021-09-23
申请号：US17263670
申请日：2019-02-21
Inventor： Kosuke Kuroda , Hiroshi Kawada , Atsushi Fukui
Abstract: Provided is a positive electrode active material including a first lithium oxide represented by Li2+xNi1−yA1yO2−zA2z, where −0.5≤x≤0.3, 0≤y≤0.1, and 0≤z≤0.3. Here, at least one of y and z is not 0. A1 includes at least one selected from the group consisting of Ga, Bi, Ba, Y, Sn, Ca, W, and Ta. A2 includes at least one selected from the group consisting of halogen elements and S.
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公开(公告)号：US20210288320A1
公开(公告)日：2021-09-16
申请号：US17262482
申请日：2019-02-21
Inventor： Hiroshi Kawada , Kosuke Kuroda , Atsushi Fukui
Abstract: A positive electrode material for secondary batteries, the material including a Li-rich transition metal oxide having a lithium-to-oxygen atomic ratio: Li/O of 0.8 or more, and a dicarboxylic acid and/or an anhydride of the dicarboxylic acid.
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公开(公告)号：US20250070133A1
公开(公告)日：2025-02-27
申请号：US18719069
申请日：2022-10-28
Inventor： Tooru Matsui , Yukihiro Oki , Hiroshi Kawada , Mitsuhiro Hibino , Kensuke Nakura
Abstract: The present invention provides a nonaqueous electrolyte secondary battery which comprises a positive electrode, a negative electrode and a nonaqueous electrolyte, and which is characterized in that: the positive electrode comprises a positive electrode collector and a positive electrode mixture layer that is arranged on the positive electrode collector; the positive electrode mixture layer comprises secondary particles, each of which is composed of aggregated primary particles of a positive electrode active material, and an assembly of a conductive material and the primary particles of the positive electrode active material; and the assembly is present in the gaps among the secondary particles.
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Patent Agency Ranking
公开(公告)号：US12119490B2
公开(公告)日：2024-10-15
申请号：US17263670
申请日：2019-02-21
Inventor： Kosuke Kuroda , Hiroshi Kawada , Atsushi Fukui
CPC classification number: H01M4/525 , C01G53/42 , H01M4/364 , H01M4/366 , H01M4/505 , H01M4/582 , H01M10/0525 , C01P2002/54 , C01P2004/80 , C01P2006/40 , H01M2004/028
Abstract: Provided is a positive electrode active material including a first lithium oxide represented by Li2+xNi1−yA1yO2−zA2z, where −0.5≤x≤0.3, 0≤y≤0.1, and 0≤z≤0.3. Here, at least one of y and z is not 0. A1 includes at least one selected from the group consisting of Ga, Bi, Ba, Y, Sn, Ca, W, and Ta. A2 includes at least one selected from the group consisting of halogen elements and S.
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17.发明公开公开(公告)号：US20240038979A1
公开(公告)日：2024-02-01
申请号：US18267902
申请日：2021-12-24
Inventor： Hiroshi Kawada
Abstract: This positive electrode active material contains a lithium metal composite oxide represented by general formula xLiyMO2-(1-x)LizMO2 (where 0
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公开(公告)号：US20230110150A1
公开(公告)日：2023-04-13
申请号：US17800779
申请日：2021-02-25
Inventor： Akiko Murata , Hiroshi Kawada , Mitsuhiro Hibino
Abstract: This positive electrode active material for a non-aqueous electrolyte secondary battery contains a lithium transition metal complex oxide capable of occluding and releasing Li. The lithium transition metal complex oxide is represented by general formula LixM1yOzFw (in the formula, 0.5 ≤ ×
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公开(公告)号：US20220359871A1
公开(公告)日：2022-11-10
申请号：US17619707
申请日：2020-06-16
Inventor： Kenji Matsubara , Hiroshi Kawada , Atsushi Fukui , Masanobu Takeuchi
IPC: H01M4/583 , H01M10/0525 , H01M10/0562
Abstract: A secondary battery including a positive electrode, a negative electrode, and an electrolytic solution. The negative electrode includes a carbon material electrochemically capable of absorbing and releasing lithium ions, and a solid electrolyte covering at least part of a surface of the carbon material and having lithium ion conductivity. The solid electrolyte includes a first compound represented by a general formula: LixM1Oy, where 0.5
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公开(公告)号：US11063254B2
公开(公告)日：2021-07-13
申请号：US16448562
申请日：2019-06-21
Inventor： Hiroshi Kawada , Atsushi Fukui
IPC: H01M4/36 , H01M4/133 , H01M10/0525 , H01M10/0569 , H01M10/052 , H01M10/0568 , H01M4/66 , H01M4/13 , H01M4/02
Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte having a lithium ion conductivity, and the negative electrode includes a negative electrode collector, a negative electrode active material layer provided on a surface of the negative electrode collector, and a coating film which at least partially covers a surface of the negative electrode active material layer and which has a lithium ion permeability. The coating film contains a lithium compound which contains an element M, an element A, an element F, and lithium; the element M is at least one selected from the group consisting of P, Si, B, V, Nb, W, Ti, Zr, Al, Ba, La, and Ta; and the element A is at least one selected from the group consisting of S, O, N, and Br.
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