SEPARATOR, METHOD OF MANUFACTURING SEPARATOR, AND ELECTROCHEMICAL DEVICE INCLUDING SEPARATOR

    公开(公告)号:EP4290668A1

    公开(公告)日:2023-12-13

    申请号:EP23178484.4

    申请日:2023-06-09

    摘要: Provided are a separator, a method of manufacturing the separator, and an electrochemical device including the separator. According to an exemplary embodiment of the present disclosure, a separator including a porous substrate and an inorganic particle layer provided on at least one surface of the porous substrate, the inorganic particle layer including inorganic particles, a hydrolytic condensate binder of a polar silane compound, and an aqueous polymer binder, wherein an amount of change in peel strength, △P, represented by the following Equation (1) is 1.1 or more may be provided: Δ P = P 1 / P 2 wherein
    P 1 is peel strength of the separator,
    P 2 is peel strength of a separator including a porous substrate and an inorganic particle layer which is provided on at least one surface of the porous substrate and includes boehmite particles and a hydrolytic condensate of (3-aminopropyl)triethoxysilane, and
    the peel strength is measured by adhering a double-sided tape having a width of 15 mm and a length of 60 mm from one end in a length direction on a copper plate having a thickness of 200 µm, a width of 15 mm, and a length of 100 mm, adhering the separator thereon by stacking and pressing so that the tape faces the inorganic particle layer of the separator, and using UTM equipment to perform a 180° peel test under conditions of a speed of 300 mm/min and a displacement of 100 mm.

    SEPARATOR, METHOD OF MANUFACTURING SEPARATOR, AND ELECTROCHEMICAL DEVICE INCLUDING SEPARATOR

    公开(公告)号:EP4300696A2

    公开(公告)日:2024-01-03

    申请号:EP23178461.2

    申请日:2023-06-09

    摘要: The present invention relates to a separator, a method of manufacturing the separator, and an electrochemical device including the separator. According to an exemplary embodiment of the present invention, a separator includes: a porous substrate; and an inorganic particle layer provided on at least one surface of the porous substrate, wherein the inorganic particle layer includes inorganic particles and a hydrolytic condensate of a silane compound, and the separator satisfies the following Relation (1): T 1 − T 0 ≥ 30 % wherein T 0 is a light transmittance measured by allowing the separator to stand at 25°C for 1 hour and then vertically spacing the separator apart from a halogen lamp with a rated voltage of 12 V and a power consumption of 50 W by 100 mm, and T 1 is a light transmittance measured by allowing the separator to stand at 150°C for 1 hour and then vertically spacing the separator apart from a halogen lamp with a rated voltage of 12 V and a power consumption of 50 W by 100 mm.