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    COMPOSITION FOR NONAQUEOUS SECONDARY BATTERY ADHESIVE LAYER, NONAQUEOUS SECONDARY BATTERY ADHESIVE LAYER AND METHOD FOR PRODUCING SAME, LAMINATE FOR NONAQUEOUS SECONDARY BATTERY AND METHOD FOR PRODUCING SAME, AND NONAQUEOUS SECONDARY BATTERY
    1.
    发明公开
    COMPOSITION FOR NONAQUEOUS SECONDARY BATTERY ADHESIVE LAYER, NONAQUEOUS SECONDARY BATTERY ADHESIVE LAYER AND METHOD FOR PRODUCING SAME, LAMINATE FOR NONAQUEOUS SECONDARY BATTERY AND METHOD FOR PRODUCING SAME, AND NONAQUEOUS SECONDARY BATTERY 审中-实审

    公开(公告)号：EP4398402A1

    公开(公告)日：2024-07-10

    申请号：EP22864302.9

    申请日：2022-08-19

    申请人： Zeon Corporation

    发明人： UMESATO Toshiyuki ,  TAKAGI Kazuki

    IPC分类号： H01M50/403 ,  H01M4/13 ,  H01M4/139 ,  H01M50/42 ,  H01M50/443 ,  H01M50/46

    CPC分类号： Y02E60/10 ,  H01M4/13 ,  H01M50/42 ,  H01M50/403 ,  H01M50/443 ,  H01M4/139 ,  H01M50/46 ,  Y02P70/50

    摘要： Provided is a composition for a non-aqueous secondary battery adhesive layer with which it is possible to form an adhesive layer for a non-aqueous secondary battery that strongly adheres battery members to each other even through pressing at normal temperature. The composition for a non-aqueous secondary battery adhesive layer contains a first particulate polymer and a second particulate polymer differing from the first particulate polymer. The first particulate polymer has a core-shell structure including a core portion and a shell portion at least partially covering an outer surface of the core portion. A polymer of the core portion and the second particulate polymer each include a (meth)acrylate monomer unit including a chain alkyl group having a carbon number of 4 or more. When a proportion constituted by the (meth)acrylate monomer unit including a chain alkyl group having a carbon number of 4 or more in the first particulate polymer is taken to be A mass%, a proportion constituted by the (meth)acrylate monomer unit including a chain alkyl group having a carbon number of 4 or more in the second particulate polymer is taken to be B mass%, proportional content of the first particulate polymer among total mass of the first particulate polymer and the second particulate polymer is taken to be X mass%, and proportional content of the second particulate polymer among total mass of the first particulate polymer and the second particulate polymer is taken to be Y mass%, a value calculated by formula (1): (AX + BY)/(X + Y), is 75 mass% or more.

    LAMINATE FOR SECONDARY BATTERIES, SECONDARY BATTERY, AND METHOD FOR PRODUCING LAMINATE FOR SECONDARY BATTERIES
    2.
    发明公开
    LAMINATE FOR SECONDARY BATTERIES, SECONDARY BATTERY, AND METHOD FOR PRODUCING LAMINATE FOR SECONDARY BATTERIES 审中-公开

    公开(公告)号：EP4084170A1

    公开(公告)日：2022-11-02

    申请号：EP20905430.3

    申请日：2020-12-09

    申请人： Zeon Corporation

    发明人： TAKAGI Kazuki

    IPC分类号： H01M10/04 ,  H01M10/0585 ,  H01M50/409

    摘要： Provided is a laminate for a secondary battery with which a secondary battery in which both safety and charging capacity are excellent can be produced. The laminate includes a negative electrode, a first separator affixed to one surface of the negative electrode, a positive electrode affixed to a surface of the first separator at an opposite side thereof to the negative electrode, and a second separator affixed to another surface of the negative electrode. In the laminate, at least part of a side surface of the positive electrode along a stacking direction is covered by a raised section where the first separator is deformed. When a surface where the first separator and positive electrode are in contact is taken as a reference surface, stacking direction height of the raised section from the reference surface is 15% to 130% of stacking direction height of the positive electrode from the reference surface.