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    SEPARATOR FOR LITHIUM SECONDARY BATTERY, AND METHOD FOR MANUFACTURING SAME
    2.
    发明公开
    SEPARATOR FOR LITHIUM SECONDARY BATTERY, AND METHOD FOR MANUFACTURING SAME 审中-公开

    公开(公告)号：EP4178023A1

    公开(公告)日：2023-05-10

    申请号：EP21892351.4

    申请日：2021-11-11

    申请人： Lg Chem, Ltd.

    发明人： MUN, Sung Cik ,  LEE, Joo-Sung ,  HAN, Sung-Jae

    IPC分类号： H01M50/411 ,  H01M50/449 ,  H01M50/403 ,  H01M10/052

    摘要： Disclosed is a separator for a lithium secondary battery including a porous polyolefin substrate and showing a tan(δ) of 0.3 or less in the storage-loss modulus curve. Also disclosed is an electrochemical device including the separator. The separator shows low viscosity but high elasticity at high temperature. Therefore, the separator maintains its strength at high temperature and ensures resistance against external force in the state of high-temperature exposure, and thus can provide a lithium secondary battery with improved safety. In addition, according to an embodiment of the present disclosure, it is possible to obtain a crosslinked polyolefin separator through a simplified process, unlike the related art.

    COMPOSITE SEPARATOR FOR ELECTROCHEMICAL DEVICE, AND ELECTROCHEMICAL DEVICE INCLUDING SAME
    3.
    发明公开
    COMPOSITE SEPARATOR FOR ELECTROCHEMICAL DEVICE, AND ELECTROCHEMICAL DEVICE INCLUDING SAME 审中-公开

    公开(公告)号：EP3996183A1

    公开(公告)日：2022-05-11

    申请号：EP20845942.0

    申请日：2020-07-29

    申请人： LG Chem, Ltd.

    发明人： LEE, Joo-Sung ,  KIM, Bong-Tae ,  JUNG, Kil-An

    IPC分类号： H01M10/42 ,  H01M4/525 ,  H01M10/052 ,  H01G11/52

    摘要： Disclosed is a composite separator for an electrochemical device, including: a porous polymer substrate having a plurality of pores; and a porous coating layer formed on at least one surface of the porous polymer substrate and including a plurality of particles and a binder positioned on the whole or a part of the surface of the particles to connect the particles with one another and fix them, wherein the particles include inorganic particles, organic particles or both, and the composite separator has a melt-down temperature of 170°C or higher. An electrochemical device including the composite separator is also disclosed.

    SEPARATOR FOR ELECTROCHEMICAL DEVICE, AND MANUFACTURING METHOD THEREFOR
    4.
    发明公开
    SEPARATOR FOR ELECTROCHEMICAL DEVICE, AND MANUFACTURING METHOD THEREFOR 审中-公开

    公开(公告)号：EP3764425A1

    公开(公告)日：2021-01-13

    申请号：EP19860975.2

    申请日：2019-09-16

    申请人： LG CHEM, LTD.

    发明人： LEE, A-Young ,  LEE, Joo-Sung ,  BAE, Won-Sik ,  RYU, Bi-Oh

    IPC分类号： H01M2/16 ,  H01M2/14 ,  H01G11/52

    摘要： Disclosed is a separator for an electrochemical device which comprises: a porous substrate having a plurality of pores; and a porous coating layer positioned on at least one surface of the porous substrate, and including a plurality of inorganic particles and a binder polymer positioned on the whole or a part of the surface of the inorganic particles to connect the inorganic particles with one another and fix them, wherein the binder polymer comprises a first binder polymer and a second binder polymer, the first binder polymer has an electrolyte uptake of 80-165%, and the second binder polymer has an electrolyte uptake of 20-40%. An electrochemical device including the separator is also disclosed.

    ORGANIC-INORGANIC COMPLEX POROUS MEMBRANE, SEPARATOR COMPRISING SAME, AND ELECTRODE STRUCTURE BODY
    9.
    发明公开
    ORGANIC-INORGANIC COMPLEX POROUS MEMBRANE, SEPARATOR COMPRISING SAME, AND ELECTRODE STRUCTURE BODY 审中-公开
    PORÖSEMEMBRAN MIT EINEM ORGANISCH-ANORGANISCHEN KOMPLEX，SEPARATOR DAMIT UNDELEKTRODENSTRUKTURKÖRPER

    公开(公告)号：EP3065202A1

    公开(公告)日：2016-09-07

    申请号：EP14859049.0

    申请日：2014-10-31

    申请人： LG Chem, Ltd.

    发明人： JIN, Sun-Mi ,  YU, Hyung-Kyun ,  LEE, Joo-Sung

    IPC分类号： H01M2/16

    摘要： The present disclosure provides an organic/inorganic composite porous membrane, comprising: one or more particles selected from inorganic particles and organic particles; and a binder polymer, wherein said one or more particles selected from inorganic particles and organic particles are bonded with each other by the binder polymer surrounding the surface of the particles, and said one or more particles are filled at a rate of 60 to 70% in the membrane.

    摘要翻译： 本公开提供了一种有机/无机复合多孔膜，其包含：一种或多种选自无机颗粒和有机颗粒的颗粒; 和粘合剂聚合物，其中所述一种或多种选自无机颗粒和有机颗粒的颗粒通过围绕颗粒表面的粘合剂聚合物彼此粘合，并且所述一种或多种颗粒以60至70％的比例填充， 在膜中。

    METHOD FOR MANUFACTURING SEPARATOR FOR LITHIUM SECONDARY BATTERY, SEPARATOR MANUFACTURED BY METHOD, AND LITHIUM SECONDARY BATTERY COMPRISING SAME
    10.
    发明公开
    METHOD FOR MANUFACTURING SEPARATOR FOR LITHIUM SECONDARY BATTERY, SEPARATOR MANUFACTURED BY METHOD, AND LITHIUM SECONDARY BATTERY COMPRISING SAME 有权
    VERFAHREN ZUR HERSTELLUNG EINES分隔器FÜREINELITHIUMSEKUNDÄRBATTERIE

    公开(公告)号：EP2894694A1

    公开(公告)日：2015-07-15

    申请号：EP14848353.0

    申请日：2014-09-30

    申请人： LG Chem, Ltd.

    发明人： LEE, Joo-Sung ,  JIN, Sun-Mi ,  HAN, Da-Kyung ,  KIM, Ji-Eun ,  KA, Kyung-Ryun

    IPC分类号： H01M2/14 ,  H01M2/16 ,  H01M10/052

    CPC分类号： H01M2/1686 ,  H01M2/145 ,  H01M2/1646 ,  H01M2/1653 ,  H01M2/166 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0034

    摘要： The present disclosure provides a method of preparing a separator for a lithium secondary battery, comprising: (S1) bringing polymer particles into electric charging to obtain electrically charged polymer particles; (S2) transferring the electrically charged polymer particles on at least one surface of a porous polymer substrate to form an electrode-adhesion layer whose area ranges from 1 to 30% based on the total area of the porous polymer substrate; and (S3) fixing the electrode-adhesion layer with heat and pressure.
    In accordance with the present disclosure, in the preparation of a separator for a lithium secondary battery, an electrode-adhesion layer is applied by using electrostatic charging, more specifically coating polymer particles by way of laser printing, without the addition of a slurry in a solvent, thereby allowing easy handling and storage and needs no drying step of the solvent to provide cost savings effect as well as rapid and efficient preparation of the separator. Further, the electrode-adhesion layer is applied in a certain area, not the whole area in the separator, thereby preventing an excessive resistance rise in a lithium secondary battery using the separator.

    摘要翻译： 本公开内容提供了一种制备锂二次电池用隔膜的方法，包括：（S1）使聚合物颗粒进行充电以获得带电荷的聚合物颗粒; （S2）将带电聚合物颗粒转移到多孔聚合物基材的至少一个表面上以形成面积为多孔聚合物基材的总面积的范围为1至30％的电极粘合层; 和（S3）在热和压力下固定电极粘附层。 根据本公开，在制备锂二次电池用隔膜时，通过使用静电充电，更具体地，通过激光印刷涂布聚合物粒子，而不在其中添加浆料来施加电极粘合层 溶剂，从而允许容易的处理和储存，并且不需要溶剂的干燥步骤，以提供成本节约效果以及快速和有效地制备隔膜。 此外，电极粘附层被施加在隔膜的一定区域而不是整个区域中，从而防止使用隔膜的锂二次电池中的电阻上升过大。