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公开(公告)号：US20220367863A1
公开(公告)日：2022-11-17
申请号：US17771284
申请日：2020-10-13
Inventor： Tooru Matsui , Hiromi Morita , Yoshiki Iwai , Kohei Hara , Hirotetsu Suzuki , Motohiro Sakata
IPC: H01M4/46 , H01M10/0525 , H01M50/431 , H01M10/0565
Abstract: An aluminum foil comprising an aluminum foil substrate that has a porous region, wherein the porous region is formed throughout the entirety of the aluminum foil substrate in the thickness direction thereof.
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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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Patent Agency Ranking
3.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：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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公开(公告)号：US20230029282A1
公开(公告)日：2023-01-26
申请号：US17786940
申请日：2020-12-22
Inventor： Kohei Hara , Tooru Matsui , Hirotetsu Suzuki , Motohiro Sakata
IPC: H01M50/409 , H01M10/0587 , H01M10/0565
Abstract: This separator for nonaqueous electrolyte secondary batteries contains a polymer compound and a solid electrolyte, and has a pore volume of 0.06 cm3/gor less.
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公开(公告)号：US11031584B2
公开(公告)日：2021-06-08
申请号：US15963991
申请日：2018-04-26
Inventor： Tooru Matsui , Junichi Sakamoto , Kazuko Asano , Akira Kano , Kensuke Nakura
IPC: H01M4/134 , H01M10/0525 , H01M4/46 , H01M4/04 , H01M4/131 , H01M4/1391 , H01M4/62 , H01M10/058 , H01M10/052 , H01M10/42 , H01M4/38 , H01M4/02 , H01M4/1395
Abstract: A lithium secondary battery includes: a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; and a nonaqueous electrolyte solution filled between the positive electrode and the negative electrode. The negative electrode includes: an electrically conductive layer having a surface; and lithium metal pieces arranged spaced from each other on the surface of the electrically conductive layer. There is no lithium metal on an imaginary line extending from a first end to a second end opposite to the first end of the surface of the electrically conductive layer and traversing a space between the lithium metal pieces.
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公开(公告)号：US11018332B2
公开(公告)日：2021-05-25
申请号：US15963992
申请日：2018-04-26
Inventor： Tooru Matsui , Junichi Sakamoto , Kazuko Asano , Akira Kano , Kensuke Nakura
IPC: H01M4/134 , H01M4/04 , H01M4/46 , H01M4/1395 , H01M4/1391 , H01M4/62 , H01M10/0525 , H01M4/131 , H01M4/70 , H01M4/66 , H01M10/052 , H01M4/02
Abstract: A lithium secondary battery includes: a positive electrode; a negative electrode including a negative electrode collector having a surface, on which a lithium metal is deposited during charge; a separator disposed between the positive electrode and the negative electrode; and a nonaqueous electrolyte solution filled between the positive electrode and the negative electrode. The negative electrode collector includes projection portions projecting from the surface toward the separator. There is no projection portion on an imaginary line extending from a first end to a second end opposite to the first end of the surface of the negative electrode collector and traversing a space between the projection portions.
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