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公开(公告)号：US20230420665A1
公开(公告)日：2023-12-28
申请号：US18213025
申请日：2023-06-22
Applicant: LG Energy Solution, LTD.
Inventor： Su Jin PARK , Sangmin LEE , Jaewook LEE , Yohan KWON
CPC classification number: H01M4/386 , H01M4/0404 , H01M4/0435 , H01M2004/027 , H01M4/622 , H01M4/625 , H01M4/134
Abstract: A negative electrode composition, a negative electrode for a lithium secondary battery including the same, a lithium secondary battery including a negative electrode, and a method a manufacturing the negative electrode. The negative electrode composition includes a silicon-containing active material; a negative electrode conductive material; and a negative electrode binder. The negative electrode binder includes a first binder having a Young's modulus of 1×103 MPa or more and a second binder having a strain value of 15% or more. The negative electrode binder satisfies the equation 1≤X/Y
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公开(公告)号：US20240290954A1
公开(公告)日：2024-08-29
申请号：US18561232
申请日：2022-09-30
Applicant: LG ENERGY SOLUTION, LTD.
Inventor： Jaewook LEE , Su Jin PARK , Chan Soo JUN
IPC: H01M4/36 , H01M4/02 , H01M4/04 , H01M4/134 , H01M4/1395 , H01M4/38 , H01M10/052
CPC classification number: H01M4/366 , H01M4/0404 , H01M4/134 , H01M4/1395 , H01M4/386 , H01M10/052 , H01M2004/021 , H01M2004/027
Abstract: A negative electrode for a lithium secondary battery, a method for preparing a negative electrode for a lithium secondary battery, and a lithium secondary battery including the negative electrode are disclosed. A negative electrode for a lithium secondary battery, including a negative electrode current collector layer; and a negative electrode active material layer on the negative electrode current collector layer. The negative electrode active material layer comprises a negative electrode composition comprising a silicon-containing active material, a negative electrode conductive material, and a negative electrode binder, the silicon-containing active material comprises silicon-containing particles having a particle diameter distribution of 0.01 μm or more and 30 μm or less. The negative electrode active material layer comprises a lower layer portion comprising a surface facing the negative electrode current collector layer and an upper layer portion comprising a surface opposite to the surface facing the negative electrode current collector layer.
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公开(公告)号：US20230253551A1
公开(公告)日：2023-08-10
申请号：US18077535
申请日：2022-12-08
Applicant: LG ENERGY SOLUTION, LTD.
Inventor： Chan Soo JUN , Yohan KWON , Su Jin PARK , Jaewook LEE
IPC: H01M4/36 , H01M4/134 , H01M10/0525
CPC classification number: H01M4/366 , H01M4/134 , H01M10/0525 , H01M2004/027
Abstract: A negative electrode for a lithium secondary battery, a method for preparing a negative electrode for a lithium secondary battery, and a lithium secondary battery comprising the negative electrode.
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公开(公告)号：US20230016746A1
公开(公告)日：2023-01-19
申请号：US17860605
申请日：2022-07-08
Applicant: LG ENERGY SOLUTION, LTD.
Inventor： Chan Soo JUN , Yohan KWON , Young Jae KIM , Taegon KIM , Su Jin PARK , Jaewook LEE
IPC: H01M4/38 , H01M10/0525 , H01M4/583 , H01M4/36
Abstract: A negative electrode for a lithium secondary battery, a method for preparing a negative electrode for a lithium secondary battery, and a lithium secondary battery including the negative electrode. The negative electrode for a lithium secondary battery includes a negative electrode current collector layer, a first negative electrode active material layer on one surface or both surfaces of the negative electrode current collector layer, and a second negative electrode active material layer on a surface opposite to a surface of the first negative electrode active material layer facing the negative electrode current collector layer.
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公开(公告)号：US20250055020A1
公开(公告)日：2025-02-13
申请号：US18718922
申请日：2023-06-22
Applicant: LG ENERGY SOLUTION, LTD.
Inventor： Su Jin PARK , Jaewook LEE , Sangmin LEE
Abstract: Disclosed is a negative electrode for a lithium secondary battery, a method for manufacturing a negative electrode for a lithium secondary battery, and a lithium secondary battery including a negative electrode.
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Patent Agency Ranking
公开(公告)号：US20250054960A1
公开(公告)日：2025-02-13
申请号：US18719053
申请日：2023-06-22
Applicant: LG ENERGY SOLUTION, LTD.
Inventor： Su Jin PARK , Jaewook LEE , Yohan KWON
IPC: H01M4/48 , H01M4/02 , H01M4/04 , H01M4/1395 , H01M4/36 , H01M4/62 , H01M10/052
Abstract: Disclosed is a negative electrode for a lithium secondary battery, a method for manufacturing a negative electrode for a lithium secondary battery, and a lithium secondary battery including a negative electrode.
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公开(公告)号：US20240339615A1
公开(公告)日：2024-10-10
申请号：US18573867
申请日：2022-10-20
Applicant: LG ENERGY SOLUTION, LTD.
Inventor： Su Jin PARK , Yohan KWON , Jaewook LEE , Jisu KANG , Soojin PARK , Hye Bin SON
IPC: H01M4/62 , H01M4/02 , H01M4/13 , H01M4/48 , H01M10/052
CPC classification number: H01M4/622 , H01M4/13 , H01M4/48 , H01M4/625 , H01M10/052 , H01M2004/021 , H01M2004/027
Abstract: A negative electrode composition, a negative electrode for a lithium secondary battery, including the same, a lithium secondary battery including the negative electrode, and a method for preparing a negative electrode composition are disclosed. The negative electrode composition including a silicon-containing active material; a first negative electrode conductive material; and a negative electrode binder. The negative electrode binder has a composite structure wherein the first negative electrode conductive material is bonded to a surface of the negative electrode binder. The bond is a bond formed by a radical polymerization reaction. The negative electrode binder has a modulus of 1×103 MPa or more and 1×104 MPa or less at 25° C. The silicon-containing active material is present in an amount ranging from 60 parts by weight or more based on 100 parts by weight of the negative electrode composition.
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公开(公告)号：US20240313200A1
公开(公告)日：2024-09-19
申请号：US18576097
申请日：2022-11-03
Applicant: LG ENERGY SOLUTION, LTD.
Inventor： Su Jin PARK , Jaewook LEE , Soojin PARK , Hye Bin SON , Minjun JE
IPC: H01M4/36 , C01B33/18 , H01M4/02 , H01M4/133 , H01M4/134 , H01M4/1393 , H01M4/1395 , H01M4/38 , H01M4/583 , H01M4/587 , H01M4/62 , H01M10/0525
CPC classification number: H01M4/366 , C01B33/18 , H01M4/133 , H01M4/134 , H01M4/1393 , H01M4/1395 , H01M4/386 , H01M4/5835 , H01M4/587 , H01M4/625 , H01M10/0525 , C01P2004/80 , C01P2006/40 , H01M2004/021 , H01M2004/027
Abstract: A negative electrode composition, a method for preparing the same, a negative electrode including the same, and a lithium secondary battery including the negative electrode are provided. The negative electrode composition comprises a silicon-based active material; a negative electrode conductive material; and a negative electrode binder, the silicon-based active material comprising a carbon coating layer doped with fluorine (F) at a surface thereof.
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公开(公告)号：US20230125989A1
公开(公告)日：2023-04-27
申请号：US17957749
申请日：2022-09-30
Applicant: LG ENERGY SOLUTION, LTD.
Inventor： Su Jin PARK , Jaewook LEE , Yohan KWON , Chan Soo JUN
IPC: H01M4/134 , H01M4/1395 , H01M4/36
Abstract: Disclosed is a negative electrode composition, a negative electrode for a lithium secondary battery, including the same, and a lithium secondary battery including the negative electrode, and a method for preparing a negative electrode composition.
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公开(公告)号：US20250070146A1
公开(公告)日：2025-02-27
申请号：US18725882
申请日：2023-06-22
Applicant: LG ENERGY SOLUTION, LTD.
Inventor： Su Jin PARK , Jaewook LEE
Abstract: A negative electrode for a lithium secondary battery according to the present invention comprises: a negative electrode current collector layer; a primer coating layer including a primer coating layer composition and provided on one or both sides of the negative electrode current collector layer; and a negative electrode active material layer provided on the opposite side of the primer coating layer from the side in contact with the negative electrode current collector layer. The negative electrode active material layer includes: a silicon-based active material; a negative electrode conductive material; and a negative electrode active material layer composition including a negative electrode binder, wherein the silicon-based active material includes at least one selected from the group consisting of SiOx (x=0) and SiOx (0
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