CROSSLINKED STRUCTURE-CONTAINING SEPARATOR FOR LITHIUM SECONDARY BATTERY, PREPARATION METHOD THEREFOR, AND LITHIUM SECONDARY BATTERY INCLUDING SEPARATOR

    公开(公告)号:EP4329077A1

    公开(公告)日:2024-02-28

    申请号:EP22799178.3

    申请日:2022-05-09

    申请人: LG Chem, Ltd.

    摘要: The present disclosure relates to a crosslinked structure-containing separator for a lithium secondary battery, including: a crosslinked structure-containing polyolefin porous support having a crosslinked structure including polymer chains interconnected directly with one another; an inorganic composite porous layer disposed on at least one surface of the crosslinked structure-containing polyolefin porous support and including an inorganic filler and a first binder polymer; and a porous adhesive layer disposed on the inorganic composite porous layer and including a second binder polymer. The present disclosure also relates to a method for preparing the separator and a lithium secondary battery including the separator. The crosslinked structure-containing separator for a lithium secondary battery shows improved high-temperature safety and excellent adhesion to an electrode. The method for manufacturing a crosslinked structure-containing separator for a lithium secondary battery includes adding a photoinitiator to a coating solution for forming a porous adhesive layer, and thus requires no additional equipment for the photocrosslinking of a polyolefin porous support, thereby realizing a simplified process

    MULTITUBULAR GAUNTLET WITH OVERLAPPING LATERAL EDGES

    公开(公告)号:EP4293736A1

    公开(公告)日:2023-12-20

    申请号:EP22179161.9

    申请日:2022-06-15

    申请人: Amer-Sil sa

    摘要: The current invention relates to continuous process for the production of a multitubular gauntlet, said process comprising the steps of: continuously providing at least one sheet of fabric with two lateral edges; overlapping two lateral edges; seaming said overlap by welding or gluing, forming a closing seam wherein both lateral edges are joined together creating a tubular fabric, seaming said tubular fabric along seams parallel to the closing seam, thereby forming flat tubes parallel to the closing seam; and thermoforming the plurality of flat tubes into the desired shape corresponding the electrode to be used, thereby obtaining the multitubular gauntlet. The invention further relates to a multitubular gauntlet for lead-acid batteries comprising at least one sheet of fabric with two lateral edges, said fabric forming a plurality of parallel tubes, wherein at least one lateral tube forming the edge of said gauntlet comprises an overlap of said lateral edges, wherein said overlap is seamed by welding or gluing.