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1.发明公开公开(公告)号：US20240014376A1
公开(公告)日：2024-01-11
申请号：US18254948
申请日：2021-12-02
Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED , TOHOKU UNIVERSITY
Inventor： Takitaro YAMAGUCHI , Shingo MATSUMOTO , Tetsu ICHITSUBO , Hongyi LI
CPC classification number: H01M4/134 , H01M4/382 , H01M4/661 , H01M4/366 , H01M4/662 , H01M10/0525 , H01M10/44 , C22F1/04 , C22C21/02 , H01M2004/027
Abstract: A metal anode is provided, including: an active layer formed of lithium and a base material in which the lithium is solid-dissolved; and a base material layer formed of the base material, in which the metal anode has a plate shape including a first surface and a second surface facing each other, the active layer is present on a side of the first surface, the base material layer is present on a side of the second surface, the active layer and the base material layer are laminated in contact with each other, the base material includes one or more metals selected from the group consisting of Al, Si, Sn, and Pb, and the base material layer has a standard deviation of length, which is from the second surface to the active layer, of 0 or greater and 10 or less.
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公开(公告)号：US20230024005A1
公开(公告)日：2023-01-26
申请号：US17785219
申请日：2020-12-16
Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED , TOHOKU UNIVERSITY
Inventor： Shingo MATSUMOTO , Takitaro YAMAGUCHI , Hiroaki HOSHIKAWA , Tetsu ICHITSUBO , Hongyi LI
IPC: H01M4/66 , H01M10/0525
Abstract: An anode for a current collector-integrated secondary battery includes: an anode surface, and a current collector surface, in which the anode for a current collector-integrated secondary battery is a plate-shaped metal anode, and an average crystal grain size when a cross section of the metal anode is observed in a scanning ion microscope (SIM) image is 200 μm or less.
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公开(公告)号：US20250029991A1
公开(公告)日：2025-01-23
申请号：US18714540
申请日：2022-12-02
Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED , TOHOKU UNIVERSITY
Inventor： Shingo MATSUMOTO , Takitaro YAMAGUCHI , Tetsu ICHITSUBO , Hongyi LI , Shohei NISHIMURA
Abstract: An anode for a lithium secondary battery, including: a cladding material obtained by bonding an anode active material layer and a current collector layer to each other, in which the anode active material layer contains aluminum, the current collector layer is made of a metal foil, and the anode active material layer satisfies (1) and (2) in which (1): an average voltage of a lithium alloying reaction in the anode active material layer measured using lithium metal as a counter electrode of the anode active material layer is 0.05 V or more, and (2): the average voltage of the lithium alloying reaction in the anode active material layer measured using lithium metal as the counter electrode of the anode active material layer is higher than an average voltage of a lithium alloying reaction in the current collector layer, and a difference in the average voltage of the lithium alloying reaction between the anode active material layer and the current collector layer is 0.05 V or more and 0.5 V or less.
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公开(公告)号：US20230011930A1
公开(公告)日：2023-01-12
申请号：US17785323
申请日：2020-12-16
Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED , TOHOKU UNIVERSITY
Inventor： Takitaro YAMAGUCHI , Shingo MATSUMOTO , Hiroaki HOSHIKAWA , Tetsu ICHITSUBO , Hongyi LI
IPC: H01M4/134 , H01M10/0525 , H01M10/44
Abstract: A lithium secondary battery includes: a metal anode capable of being doped and dedoped with lithium ions; a cathode capable of being doped and dedoped with the lithium ions; and an electrolyte disposed between the metal anode and the cathode, in which the metal anode has a plate shape, and is composed of lithium and a base material in which the lithium is solid-dissolved, the metal anode in a discharged state has a layer of a substitutional solid solution, the substitutional solid solution has a structure in which a part of a crystal lattice of a metal constituting the base material is substituted with the lithium, and the layer is located on a surface of the metal anode opposite to a surface facing the cathode or inside the metal anode.
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Patent Agency Ranking
5.发明申请公开(公告)号：US20230139959A1
公开(公告)日：2023-05-04
申请号：US17915278
申请日：2021-04-07
Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
Inventor： Shingo MATSUMOTO , Takitaro YAMAGUCHI
IPC: H01M10/44
Abstract: Provided is a method of manufacturing a lithium secondary battery including an aluminum anode configured to occlude and release lithium ions, a cathode configured to occlude and release lithium ions, and an electrolyte, the aluminum anode being formed of an aluminum-containing metal, the method including: a step of assembling the lithium secondary battery; a step of charging the assembled lithium secondary battery; a step of storing the lithium secondary battery for at least 4 hours after the charging; and a step of inspecting a capacity of the lithium secondary battery after the step of storing.
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6.发明公开公开(公告)号：US20240170658A1
公开(公告)日：2024-05-23
申请号：US18550579
申请日：2022-02-28
Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
Inventor： Toshiaki KUMAGAI , Shingo MATSUMOTO , Yoshiaki HONDA , Yoji MATSUO
CPC classification number: H01M4/463 , C01B35/00 , C22C21/00 , C22F1/04 , H01M4/134 , H01M10/052 , C01P2006/40 , H01M2004/021 , H01M2004/027
Abstract: This anode active material for a lithium secondary battery is an aluminum-containing metal in which a non-aluminum phase is dispersed in an aluminum phase, the aluminum-containing metal is a rolled material rolled in one direction, and the non-aluminum phase contains any one or both of B and Ti and satisfies the following (1) and (2) in an image acquired by a method described in the following image acquisition conditions.
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公开(公告)号：US20230155121A1
公开(公告)日：2023-05-18
申请号：US17916678
申请日：2021-04-07
Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
Inventor： Takitaro YAMAGUCHI , Shingo MATSUMOTO , Toshiaki KUMAGAI , Yoji MATSUO
IPC: H01M4/46 , H01M10/0525
CPC classification number: H01M4/463 , H01M10/0525 , H01M2004/027
Abstract: Provided is a lithium secondary battery including: an aluminum anode configured to occlude and release lithium ions: a cathode configured to occlude and release lithium ions; and an electrolyte, in which the aluminum anode is formed of an aluminum-containing metal, the cathode has a cathode active material, and the cathode active material contains a metal oxide containing nickel.
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公开(公告)号：US20230146067A1
公开(公告)日：2023-05-11
申请号：US17915931
申请日：2021-04-07
Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
Inventor： Takitaro YAMAGUCHI , Shingo MATSUMOTO , Toshiaki KUMAGAI , Yoji MATSUO
IPC: H01M4/46 , H01M50/434 , H01M10/0585 , H01M4/04 , H01M10/052
CPC classification number: H01M4/463 , H01M4/0435 , H01M10/052 , H01M10/0585 , H01M50/434 , H01M2004/027
Abstract: Provided is a laminate for a lithium secondary battery including: a metal anode configured to occlude and release lithium ions; a cathode configured to occlude and release lithium ions; and an electrolyte, in which the metal anode is formed of an aluminum-containing metal, the metal anode has a plate shape, and a surface of flat surfaces of the metal anode facing the cathode has a ceramic separator or a solid electrolyte layer.
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公开(公告)号：US20230343991A1
公开(公告)日：2023-10-26
申请号：US17913921
申请日：2021-04-07
Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
Inventor： Shingo MATSUMOTO , Takitaro YAMAGUCHI
IPC: H01M10/0525 , H01M4/46 , H01M10/0569
CPC classification number: H01M10/0525 , H01M4/463 , H01M10/0569 , H01M2004/027
Abstract: Provided is a lithium secondary battery including: an aluminum anode configured to occlude and release lithium ions; a cathode configured to occlude and release lithium ions; and an electrolyte solution, in which the aluminum anode is formed of an aluminum-containing metal, and the electrolyte solution contains an electrolyte, an organic solvent, and an additive.
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