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61.发明申请公开(公告)号：US20250140863A1
公开(公告)日：2025-05-01
申请号：US18719420
申请日：2022-10-17
Inventor： Shogo Esaki , Mitsuhiro Hibino , Kensuke Nakura
Abstract: Provided are: a secondary battery electrode in which elution of a metal component is suppressed; and a secondary battery using this electrode. This secondary battery comprises a positive electrode and a negative electrode. At least the positive electrode or the negative electrode includes a collector, and a composite layer disposed on a surface of the collector. The composite layer includes an electrode active material containing an elemental metal, a compound having a terminal CN group, an electroconductive material, a water-insoluble additive, and a water-soluble additive. The water-insoluble additive contains a polysaccharide.
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公开(公告)号：US20250062334A1
公开(公告)日：2025-02-20
申请号：US18721348
申请日：2022-12-22
Inventor： Jin Zhang , Issei Ikeuchi , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/505 , H01M4/02 , H01M10/052
Abstract: A positive electrode active material for a secondary battery contains a lithium metal composite oxide having a crystal structure based on a rock salt structure belonging to the space group Fm-3m. The lithium metal composite oxide contains at least one element A1 selected from the group consisting of Fe, Cr, Na, Mg, Cu, Zn, Pb, Sb, and W. The content of the element A1 in the lithium metal composite oxide is 10 ppm by mass or more and 1000 ppm by mass or less with respect to the total amount of the lithium metal composite oxide.
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公开(公告)号：US20240396018A1
公开(公告)日：2024-11-28
申请号：US18695164
申请日：2022-09-02
Inventor： Akihiro Taniguchi , Motohiro Sakata , Kaoru Inoue , Kensuke Nakura
Abstract: A negative electrode for secondary batteries according to one embodiment of the present disclosure comprises a negative electrode collector and a negative electrode mixture layer that is arranged on the negative electrode collector. This negative electrode for secondary batteries is characterized in that: the negative electrode mixture layer comprises a negative electrode active material that contains a carbon material and an Si-based material; the negative electrode mixture layer internally has a plurality of voids; the pore size distribution of the negative electrode mixture layer as determined by a mercury intrusion method has two peak values R1 and R2; and the plurality of voids have an aspect ratio of 2 or more, the aspect ratio being obtained by dividing the length in the major axis direction by the length in the minor axis direction.
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64.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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Patent Agency Ranking
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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67.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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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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