公开(公告)号：EP3349270A1

公开(公告)日：2018-07-18

申请号：EP16864597.6

申请日：2016-11-11

申请人： LG Chem, Ltd.

发明人： KWON, Hye-Jin ,  JEONG, So-Mi ,  KIM, Ji-Eun ,  LEE, Joo-Sung ,  JIN, Sun-Mi

IPC分类号： H01M2/16 ,  H01M10/052

CPC分类号： H01M2/1686 ,  H01M2/16 ,  H01M2/1653 ,  H01M2/166 ,  H01M10/052 ,  H01M10/0525 ,  Y02E60/122 ,  Y02T10/7011

摘要： Disclosed are a separator having an electrode adhesive layer and an electrochemical device including the same. The electrode adhesive layer includes organic particles and an acrylic resin binder. Preferably, the acrylic resin binder is present in an amount of 30 wt% or more, so that a film-shaped electrode adhesive layer can be formed even when the organic particles have a particle diameter smaller than that of the pores of the underlying substrate or voids of the underlying porous coating layer.

公开(公告)号：EP3848997A1

公开(公告)日：2021-07-14

申请号：EP19868070.4

申请日：2019-09-27

申请人： LG Chem, Ltd.

发明人： KIM, Young-Bok ,  SUNG, Dong-Wook ,  JEONG, So-Mi

IPC分类号： H01M2/16 ,  H01M2/14 ,  H01M10/058 ,  H01M10/04 ,  H01G11/52

摘要： Provided is a separator including a porous polymer substrate and an inorganic coating layer formed on at least one surface of the porous polymer substrate. The inorganic coating layer includes inorganic particles and a binder resin, the binder resin includes a first binder resin including a polyvinylidene fluoride (PVdF)-based polymer and a second binder resin including an acrylic polymer, and the acrylic polymer has an acid value of 1 or less. In addition, the inorganic coating layer has a high content of binder resin at the top layer portion to provide excellent adhesion between the separator and an electrode.

公开(公告)号：EP3553849A1

公开(公告)日：2019-10-16

申请号：EP18875904.7

申请日：2018-11-08

申请人： LG Chem, Ltd.

发明人： JANG, Dae-Sung ,  KIM, Yeon-Soo ,  SUNG, Dong-Wook ,  LEE, Hyun-Sup ,  JEONG, So-Mi

IPC分类号： H01M2/16 ,  H01M10/052 ,  H01G11/52

摘要： Disclosed is a separator which includes a porous polymer substrate including a polymer showing a variation in phase angle represented by the following Formula 1 at 0.1 Hz depending on an increase in temperature. An electrochemical device including the separator is also disclosed.
[Formula 1] Variation in phase angle at 0.1 Hz = Phase angle 190 − Phase angle 280 / Phase angle 190 × 100 ≥ 0 ⁢ % ,
wherein Phase angle 190 means the phase angle of the porous polymer substrate at 0.1 Hz and 190°C, and
Phase angle 280 means the phase angle of the porous polymer substrate at 0.1 Hz and 280°C.

公开(公告)号：EP2781637A1

公开(公告)日：2014-09-24

申请号：EP13859475.9

申请日：2013-11-29

申请人： LG Chem, Ltd.

发明人： RYU, Bo-Kyung ,  KIM, Jin-Woo ,  LEE, Ji-Eun ,  JEONG, So-Mi ,  KIM, Jong-Hun

IPC分类号： D04H1/4382 ,  D04H1/541 ,  D04H1/558 ,  H01M2/16

CPC分类号： H01M2/162 ,  D01D5/06 ,  D01F11/00 ,  D04H3/12 ,  D06M15/263 ,  D06M15/347 ,  D06M15/643 ,  D06M15/693 ,  D06M23/10 ,  H01M2/145 ,  H01M2/1606

摘要： The present disclosure relates to a non-woven fabric made from a fiber coated with a binder polymer by spinning a non-woven forming fiber in an organic binder polymer compound solution, an electrochemical cell using the non-woven fabric as a separator substrate, and a method of making the non-woven fabric, and the non-woven fabric has a pore diameter in a range of 0.001 to 10 µm, thereby providing a mechanical property required for a separator while ensuring a favorable movement of a lithium ion, and in the use of the non-woven fabric as a separator of an electrochemical cell, eliminating a need for a process of applying a separate adhesive layer, resulting in an effect of simplifying a separator manufacturing process.

摘要翻译： 本发明通过使用非织造织物作为隔板基材在有机粘合剂聚合物化合物溶液中纺丝非织造纤维形成于电化学电池涉及从涂有粘合剂聚合物的纤维制成的非织造织物，以及 使非织造织物的方法，和非织造织物具有范围为0.001至10微米的孔直径，从而提供同时确保锂离子的有利运动所需的分离器的机械性能，并且在 使用该非织造织物的作为电化学电池的隔膜，消除需要用于施加单独的粘合剂层，在对简化的隔板的制造工艺的效应产生的处理。

公开(公告)号：EP3761401A1

公开(公告)日：2021-01-06

申请号：EP19873664.7

申请日：2019-10-14

申请人： LG CHEM, LTD.

发明人： LEE, Jong-Yoon ,  JEONG, So-Mi ,  SUNG, Dong-Wook ,  JANG, Dae-Sung

IPC分类号： H01M2/16 ,  H01M2/14 ,  H01M10/052 ,  H01G11/52

摘要： Provided is a separator for an electrochemical device including a first block having repeating units represented by Chemical Formula 1 and a second block having repeating units represented by Chemical Formula 2. A method for manufacturing the same is also provided. The separator shows low resistance, improved adhesion to an electrode and improved swelling property with a solvent.

公开(公告)号：EP3848998A1

公开(公告)日：2021-07-14

申请号：EP19878162.7

申请日：2019-10-29

申请人： LG Chem, Ltd.

发明人： JANG, Dae-Sung ,  SUNG, Dong-Wook ,  JEONG, So-Mi

IPC分类号： H01M2/16 ,  H01M10/0525

摘要： The present disclosure relates to a separator for an electrochemical device, including a porous polymer substrate and an inorganic coating layer formed on at least one surface of the porous polymer substrate, wherein the inorganic coating layer includes inorganic particles and a binder resin, the binder resin includes a polyvinylidene fluoride (PVdF)-based polymer, and at least one hydrogen atom in the main chain of the PVdF-based polymer is substituted with an acrylic compound-derived functional group.

公开(公告)号：EP3764426A1

公开(公告)日：2021-01-13

申请号：EP19866774.3

申请日：2019-09-30

申请人： LG CHEM, LTD.

发明人： JEONG, So-Mi ,  SUNG, Dong-Wook ,  JANG, Dae-Sung

IPC分类号： H01M2/16 ,  H01M10/052

摘要： The present disclosure relates to a separator for a lithium secondary battery comprising a porous substrate, and a porous coating layer disposed on at least one surface of the porous substrate and comprising inorganic particles and binder polymer, wherein the binder polymer is terpolymer including a repeat unit derived from vinylidenefluoride (VDF), a repeat unit derived from hexafluoropropylene (HFP) and a repeat unit derived from chlorotrifluoroethylene (CTFE), the terpolymer includes 65 to 90 weight% of the repeat unit derived from VDF, 1 to 28 weight% of the repeat unit derived from HFP and 5 to 28 weight% of the repeat unit derived from CTFE, and the separator for a lithium secondary battery has adhesiveness towards electrode ranging from 30 gf/25mm to 150 gf/25mm and machine direction (MD) thermal shrinkage of 1 to 18% and transverse direction (TD) thermal shrinkage of 1 to 17%, and a lithium secondary battery comprising the same, wherein the separator for a lithium secondary battery has uniform micropores on the surface, and thus has the increased adhesive surface area with electrode and consequential improved adhesiveness towards electrode.

公开(公告)号：EP3734701A1

公开(公告)日：2020-11-04

申请号：EP19862459.5

申请日：2019-09-20

申请人： LG CHEM, LTD.

发明人： JEONG, So-Mi ,  KIM, Young-Bok ,  LEE, Je-An

IPC分类号： H01M2/16 ,  H01M10/052 ,  H01G11/52

摘要： The present disclosure relates to a separator and an electrochemical device including the same. The separator includes a porous coating layer formed on at least one surface of the porous polymer substrate, wherein the porous coating layer includes, as a binder polymer, an amorphous adhesive binder polymer, and at least one fluorinated binder polymer. It is possible to provide a separator which shows low resistance and significantly improved adhesion to an electrode, and an electrochemical device including the same.