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    SLOT DIE FOR MANUFACTURING RECHARGEABLE BATTERY ELECTRODE
    3.
    发明申请
    SLOT DIE FOR MANUFACTURING RECHARGEABLE BATTERY ELECTRODE 有权

    公开(公告)号：US20210151732A1

    公开(公告)日：2021-05-20

    申请号：US16952354

    申请日：2020-11-19

    申请人： SAMSUNG SDI CO., LTD. ,  Korea University Research and Business Foundation

    发明人： Won-Gi AHN ,  Yongho KIM ,  Jin Seok PARK ,  Juhye BAE ,  Hyeri EOM ,  Min-young JEONG ,  Hyun Wook JUNG

    IPC分类号： H01M4/04 ,  B05D1/36 ,  H01M4/62 ,  B05C5/02

    摘要： A slot die for manufacturing a rechargeable battery electrode includes a first block with a chamber to accommodate an active material slurry, a second block facing and attached to the first block, a shim between the first and second blocks and including facing end portions, and a slot between the first and second blocks, and between the facing end portions, the slot including a first side defined by the first block, and a second side defined by the second block and facing the first side. Each of the end portions of the shim includes a width adjuster protruding to a second reference point from a first reference point in a width direction by a first adjusting width, extending to a third reference point from the second reference point at a first angle with respect to a discharging direction, and having a first adjusting length in the discharging direction.

    NEGATIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME
    6.
    发明申请
    NEGATIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME 有权

    公开(公告)号：US20230116454A1

    公开(公告)日：2023-04-13

    申请号：US17961475

    申请日：2022-10-06

    申请人： SAMSUNG SDI CO., LTD.

    发明人： Jungmin LEE ,  Minjae KIM ,  Won-Gi AHN ,  Kukjoo LEE

    IPC分类号： H01M4/38 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/583

    摘要： Disclosed herein is a negative electrode including a current collector, a first active material layer on the current collector, and a second active material layer on the first active material layer, wherein at least one of the first active material layer and the second active material layer includes a silicon-based active material and a binder, and the binder includes a copolymer (A) and a copolymer (B), the copolymer (A) includes a unit (a-1) derived from a (meth)acrylic acid-based monomer and a unit (a-2) derived from a (meth)acrylonitrile monomer, and the copolymer (B) includes a unit (b-1) derived from an aromatic vinyl-based monomer and a unit (b-2) derived from an ethylenically unsaturated monomer that is at least one of an unsaturated carboxylic acid alkyl ester monomer, a (meth)acrylic acid-based monomer, an unsaturated carboxylic acid amide monomer, or a conjugated diene monomer, and a rechargeable lithium battery including the same.

    NEGATIVE ELECTRODE AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME
    7.
    发明申请
    NEGATIVE ELECTRODE AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME 有权

    公开(公告)号：US20230089248A1

    公开(公告)日：2023-03-23

    申请号：US17873047

    申请日：2022-07-25

    申请人： SAMSUNG SDI CO., LTD.

    发明人： Min-young JEONG ,  Juhye BAE ,  Won-Gi AHN ,  Taeil LEE

    IPC分类号： H01M4/36 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/587 ,  H01M10/052

    摘要： A negative electrode active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The negative electrode includes a current collector and a negative electrode active material layer on the current collector. The negative electrode active material layer includes a first region in contact with the current collector and including a first negative electrode active material, and a second region on the first region and including a second negative electrode active material. Each of the first and second negative electrode active materials has an average particle diameter (D50) of about 9 μm to about 22 μm, morphologies that are different from each other, a porosity of the second region is higher than that of the first region, and a porosity ratio of the second region to the first region is from about 110% to about 190%.