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61.发明公开公开(公告)号：US20240304803A1
公开(公告)日：2024-09-12
申请号：US18275333
申请日：2022-02-02
Inventor： Shogo Esaki , Ryuichi Natsui , Junko Matsushita , Mitsuhiro Hibino , Kensuke Nakura
CPC classification number: H01M4/505 , C01G53/50 , C01P2002/52 , C01P2006/40 , H01M2004/028
Abstract: The positive electrode active material for non-aqueous electrolyte secondary batteries which is an example of one embodiment includes a lithium-transition metal composite oxide represented by the compositional formula LixMnyNizSiaMfO2-αFα (in the formula, M is at least one element selected from Na, K, Mg, Ca, Sr, Ba, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ge, Sn, Pb, Sc, Ti, V, Cr, Fe, Co, Cu, Zn, Ru, Rh, Re, Pd, Ir, Ag, Bi, Sb, B, Al, Ga, In, P, Zr, Hf, Nb, Mo, and W, x+y+z+a+f≤2+A, 1.0
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公开(公告)号：US12057564B2
公开(公告)日：2024-08-06
申请号：US17152801
申请日：2021-01-20
Inventor： Shuhei Uchida , Ryuichi Natsui , Kensuke Nakura
CPC classification number: H01M4/131 , H01M4/364 , H01M4/366 , H01M4/505 , H01M4/525 , H01M10/0525 , C01P2002/74 , H01M2004/028
Abstract: A positive electrode active material includes a lithium composite oxide having a crystal structure belonging to the space group Fd-3m and has an integrated intensity ratio I(18°-20°)/I(43°-46°) of greater than or equal to 0.05 and less than or equal to 0.90 and an integrated intensity ratio I(63°-65°)/I(17°-19°) of greater than or equal to 0.8 and less than or equal to 2.0. The integrated intensity ratio I(18°-20°)/I(43°-46°) is a ratio of an integrated intensity I(18°-20°) to an integrated intensity I(43°-46°). The integrated intensity ratio I(63°-65°)/I(17°-19°) is a ratio of an integrated intensity I(63°-65°) to an integrated intensity I(17°-19°). The integrated intensity I(A°-B°) is an integrated intensity of a maximum peak present in a range of angle of diffraction 2θ greater than or equal to A° and less than or equal to B° in the X-ray diffraction pattern of the positive electrode active material.
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公开(公告)号：US20240204179A1
公开(公告)日：2024-06-20
申请号：US18555821
申请日：2022-04-12
Inventor： Tooru Matsui , Keisuke Asaka , Hirotetsu Suzuki , Motohiro Sakata , Kensuke Nakura
IPC: H01M4/36 , H01M4/62 , H01M10/0525
CPC classification number: H01M4/366 , H01M4/623 , H01M4/625 , H01M10/0525
Abstract: Provided is a non-aqueous electrolyte secondary battery with enhanced discharging performance. A non-aqueous electrolyte secondary battery according to one aspect of the present disclosure is provided with an electrode having: a current collector; and a mixture layer that is formed on a surface of the current collector and that contains an active material, a conducting agent, and a binding agent. The mixture layer contains a first mixture layer facing the current collector and a second mixture layer laminated on a surface of the first mixture layer. A short-circuit resistance R1 of the first mixture layer and a short-circuit resistance R2 of the second mixture layer satisfy the relationship R1
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64.发明公开公开(公告)号：US20240186530A1
公开(公告)日：2024-06-06
申请号：US18285557
申请日：2022-04-12
Inventor： Tooru Matsui , Keisuke Asaka , Hirotetsu Suzuki , Motohiro Sakata , Kensuke Nakura
IPC: H01M4/74 , H01M4/02 , H01M4/04 , H01M4/80 , H01M10/052 , H01M10/0587
CPC classification number: H01M4/747 , H01M4/0404 , H01M4/0435 , H01M4/806 , H01M10/0587 , H01M2004/021 , H01M10/052
Abstract: Provided is a nonaqueous electrolyte secondary battery having improved discharge characteristics. A nonaqueous electrolyte secondary battery according to one aspect of the present disclosure comprises an electrode including a current collector and a mixture layer that is formed on a surface of the current collector and that contains an active material. The current collector includes an electron conductive layer having a gap on the surface in contact with the mixture layer, and an electrolytic solution is present inside the electron conductive layer.
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公开(公告)号：US20240072252A1
公开(公告)日：2024-02-29
申请号：US18269391
申请日：2021-12-23
Inventor： Ryuichi Natsui , Kensuke Nakura , Mitsuhiro Hibino
IPC: H01M4/525 , H01M4/04 , H01M4/131 , H01M4/62 , H01M10/0569
CPC classification number: H01M4/525 , H01M4/0404 , H01M4/131 , H01M4/623 , H01M4/625 , H01M10/0569 , H01M2004/028
Abstract: A positive electrode for secondary batteries includes a positive electrode current collector, and a positive electrode mixture layer provided on a surface of the positive electrode current collector. The positive electrode mixture layer contains a positive electrode active material, a conductive agent, a polysaccharide, and a resin other than the polysaccharide, and at least part of surfaces of the positive electrode active material, the conductive agent, and the resin is coated with the polysaccharide.
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Patent Agency Ranking
公开(公告)号：US20230101615A1
公开(公告)日：2023-03-30
申请号：US17801190
申请日：2021-02-25
Inventor： Ryuichi Natsui , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M10/44 , H01M10/0525 , H01M4/505 , H01M4/525 , H02J7/00
Abstract: This charging method is A method for charging a nonaqueous electrolyte secondary cell containing a lithium-rich positive-electrode active material. When constant-current charging is performed to a predetermined voltage V2 which is equal to or higher than a setting voltage V1, and then constant-current discharging is performed to a predetermined voltage V3, V3
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公开(公告)号：US20230096005A1
公开(公告)日：2023-03-30
申请号：US17801191
申请日：2021-02-25
Inventor： Takanori Omae , Ryuichi Natsui , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/525 , H01M4/485 , H01M4/505 , H01M10/0525
Abstract: This positive electrode active material for nonaqueous electrolyte secondary batteries contains a lithium transition metal composite oxide. This lithium transition metal composite oxide is represented by general formula LixMnyNizMe2-x-y-zOaFb (wherein 1≤x≤1.2; 0.4≤y≤0.7; 0.1≤z≤0.4; 0
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公开(公告)号：US20230071732A1
公开(公告)日：2023-03-09
申请号：US17798965
申请日：2021-02-10
Inventor： Ryuichi Natsui , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/525 , H01M4/485 , H01M4/505 , H01M50/46 , H01M10/0525
Abstract: This positive electrode active material for a non-aqueous electrolyte secondary battery contains a lithium transition metal composite oxide represented by the composition formula LixMnyNizALaMbO2-cFc (in the formula, M represents at least two elements selected from Ti, Co, Si, Sr, Nb, W, Mo, P, Ca, Mg, Sb, Na, B, V, Cr, Fe, Cu, Zn, Ge, Zr, Ru, K, and Bi; 1.0
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公开(公告)号：US11569492B2
公开(公告)日：2023-01-31
申请号：US17021468
申请日：2020-09-15
Inventor： Ryuichi Natsui , Kensuke Nakura
IPC: H01M4/1315 , H01M4/505 , H01M10/052 , C01G51/00 , C01G45/00 , H01M4/36 , C01G53/00 , H01M4/485 , H01M10/0525 , H01M4/525 , H01M4/62 , H01M4/02
Abstract: A positive-electrode active material contains a compound that has a crystal structure belonging to a space group FM3-M and contains is represented by the composition formula (1) and an insulating compound, LixMeyOαFβ (1) wherein Me denotes one or two or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr, and the following conditions are satisfied. 1.7≤x≤2.2 0.8≤y≤1.3 1≤α≤2.5 0.5≤β≤2
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70.发明授权公开(公告)号：US11251437B2
公开(公告)日：2022-02-15
申请号：US16389038
申请日：2019-04-19
Inventor： Akira Kano , Ryohei Miyamae , Kiyohiro Isii , Kensuke Nakura
IPC: H01M4/70 , H01M4/134 , H01M4/38 , H01M4/66 , H01M10/052 , H01M10/0587 , H01M4/02
Abstract: A lithium secondary battery comprises an electrode group and a nonaqueous electrolyte having lithium-ion conductivity. A negative electrode current collector has a first surface facing outward of winding of the electrode group and a second surface facing inward of the winding of the electrode group. At least the first surface or the second surface includes a first region and a second region that is closer to an innermost circumference of the winding of the electrode group than the first region. Protrusions include outer-circumference-side protrusions disposed on the first region and inner-circumference-side protrusions disposed on the second region. In at least the first surface or the second surface, a first area rate is larger than a second area rate.
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