公开(公告)号：EP2840628A1

公开(公告)日：2015-02-25

申请号：EP13778296.7

申请日：2013-04-22

申请人： LG Chem, Ltd.

发明人： RYU, Bo-Kyung ,  LEE, Joo-Sung ,  KIM, Jong-Hun

IPC分类号： H01M2/14 ,  H01M10/052

CPC分类号： H01M2/145 ,  H01G11/52 ,  H01M2/166 ,  H01M2/168 ,  H01M2/1686 ,  H01M8/1069 ,  Y02E60/13 ,  Y02P70/56

摘要： The present invention refers to a method of preparing a separator, a separator prepared therefrom and an electrochemical device having the separator. The method of preparing a separator according to the present invention comprises providing a planar and porous substrate having multiple pores; and coating a first slurry on at least one surface of the porous substrate through a slot section to form a porous coating layer, while continuously coating a second slurry on the porous coating layer through a slide section adjacent to the slot section to form a layer for adhesion with an electrode, the first slurry comprising inorganic particles, a first binder polymer and a first solvent, and the second slurry comprising a second binder polymer and a second solvent.
In accordance with the present invention, in the preparation of a separator, a second slurry comprising a binder polymer is smoothly discharged through a slide section without an external force to coat a layer for adhesion with an electrode on the top of a porous coating layer which is formed on a porous substrate by discharging a first slurry through a slot section, thereby preventing the inter-mixing of the porous coating layer and the layer for adhesion with an electrode, and eventually improving the adhesiveness of the separator to an electrode and preventing the performance of an electrochemical device from being deteriorated.

摘要翻译： 本发明涉及一种制备分离器，从和到具有分离器的电化学装置制备有一个分离器的方法。 制备的隔板gemäß到本发明的方法包括提供一平面的，并且具有多个孔的多孔基材; 并通过槽部分涂覆所述多孔基材的至少一个表面上的第一浆液以形成多孔涂层，同时连续通过一滑动部相邻于槽部分涂覆所述多孔涂层上的第二浆料以形成用于层 与上电极的粘附溶剂中，第一浆液包含无机粒子，第一粘合剂聚合物和第一溶剂，和所述第二浆料包含第二粘合剂聚合物和第二。 在本发明雅舞蹈，在分离器的制备中，第二浆液，其包含粘合剂聚合物顺利地通过一滑动部在外力在电极放电，但无涂层粘附的层上的多孔涂层的顶部哪 通过经由狭槽部排出的第一浆液，由此防止多孔涂层的粘合的相互混合和层与电极，并最终在电极提高隔板的密合性和防止形成于多孔性基材 从电化学装置的性能劣化。

公开(公告)号：EP2805775A1

公开(公告)日：2014-11-26

申请号：EP13861017.5

申请日：2013-12-06

申请人： LG Chem, Ltd.

发明人： KIM, Jin-Woo ,  KIM, Jong-Hun ,  LEE, Joo-Sung

IPC分类号： B05C5/02 ,  B05C11/10 ,  H01M4/04 ,  H01M10/04

CPC分类号： B05C5/0262 ,  B05C5/0245 ,  B05C5/0254 ,  H01M4/0404 ,  H01M4/0409 ,  Y10T137/8593

摘要： Disclosed is a slot die, which includes a feed unit for introducing a coating material, a chamber for accommodating a coating material supplied through the feed unit, a slit communicating with the chamber to discharge the coating material, and a die body having die lips which form the slit, wherein the chamber includes a chamber block which has an inner space for accommodating the coating material and is configured so that the entire block is exchangeable with respect to the die body, and wherein a coating width is determined by a width of the inner space of the chamber block.

摘要翻译： 公开了一种槽模，其包括用于引入涂料的进料单元，用于容纳通过进料单元供给的涂料的室，与室排放涂料的狭缝以及具有模唇的模体， 形成狭缝，其中所述腔室包括腔室块，所述腔室块具有用于容纳所述涂层材料的内部空间，并且构造成使得整个块体相对于所述模具体可更换，并且其中涂层宽度由 腔室的内部空间。

公开(公告)号：EP2779275A1

公开(公告)日：2014-09-17

申请号：EP12847056.4

申请日：2012-11-09

申请人： LG Chem, Ltd.

发明人： LEE, Joo-Sung ,  JIN, Sun-Mi ,  KIM, Jong-Hun ,  HA, Jeong-Min ,  RYU, Bo-Kyung ,  KIM, Jin-Woo

IPC分类号： H01M2/14 ,  H01M2/16 ,  H01M10/058

CPC分类号： H01M2/1686 ,  H01M2/145 ,  H01M2/162 ,  H01M2/1653 ,  H01M2/166 ,  H01M2/168 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/4235 ,  Y02E60/122

摘要： The present invention refers to a separator for an electrochemical device and an electrochemical device having the same. More specifically, the separator of the present invention comprises a porous substrate; a first porous coating layer formed on one surface of the porous substrate and comprising a mixture of inorganic particles and a first binder polymer; and a second porous coating layer formed on the other surface of the porous substrate and comprising a product obtained by drying a mixture of a solvent, a non-solvent and a second binder polymer.
Such separator of the present invention can have good thermal safety due to a porous organic-inorganic coating layer formed on one surface thereof, and superior adhesiveness due to a porous coating layer made of a binder thin film formed by applying and drying a mixture of a binder polymer and a non-solvent on the other surface thereof. Also, the separator can have a decreased thickness to reduce the resistance of electrochemical device and improve the capacity thereof

摘要翻译： 本发明涉及用于电化学装置的隔板和具有该电化学装置的电化学装置。 更具体地说，本发明的隔膜包括多孔基材; 第一多孔涂层，其形成在所述多孔基材的一个表面上并且包含无机颗粒和第一粘合剂聚合物的混合物; 以及第二多孔涂层，其形成在所述多孔基材的另一个表面上，并且包含通过干燥溶剂，非溶剂和第二粘合剂聚合物的混合物而获得的产物。 本发明的隔膜由于在其一个表面上形成多孔有机 - 无机涂层而具有良好的热安全性，并且由于由粘合剂薄膜制成的多孔涂层而具有优异的粘合性，所述粘合剂薄膜通过涂覆并干燥 粘合剂聚合物和其另一个表面上的非溶剂。 而且，隔板可以具有减小的厚度以降低电化学装置的电阻并提高其容量

公开(公告)号：EP2731186A1

公开(公告)日：2014-05-14

申请号：EP11869174.0

申请日：2011-12-06

申请人： LG Chem, Ltd.

发明人： LEE, Joo-Sung ,  KIM, In-Chul ,  RYU, Bo-Kyung ,  KIM, Jong-Hun

IPC分类号： H01M10/04 ,  H01M2/16 ,  H01M10/05

CPC分类号： H01G11/12 ,  H01G11/52 ,  H01G11/82 ,  H01G11/84 ,  H01M2/1646 ,  H01M2/1653 ,  H01M2/166 ,  H01M2/1673 ,  H01M2/168 ,  H01M2/1686 ,  H01M4/364 ,  H01M4/621 ,  H01M10/045 ,  H01M10/0459 ,  H01M10/052 ,  Y02E60/13

摘要： An electrode assembly is disclosed. The electrode assembly has a structure in which a plurality of unit cells are bonded to one or both surfaces of a first separator whose length is greater than width and are stacked in a zigzag pattern or wound sequentially. The first separator includes a first porous electrode adhesive layer, to which electrodes of the unit cells are adhered, formed at one surface thereof to which the unit cells are bonded. The first porous electrode adhesive layer includes a mixture of inorganic particles and a binder polymer. Each of the unit cells includes a second separator. The second separator includes second porous electrode adhesive layers, to which electrodes of the unit cell are adhered, formed at both surfaces thereof. Each of the second porous electrode adhesive layers includes a mixture of inorganic particles and a binder polymer. Further disclosed is an electrochemical device including the electrode assembly. The separators, each of which includes the porous electrode adhesive layers, to which electrodes are adhered, formed at both surfaces thereof, and the separator including a porous electrode adhesive layer, to which electrodes are adhered, formed at one surface thereof are separately used in the electrode assembly. This reduces the electrical resistance of the separators, contributing to an improvement in the performance of the electrochemical device.

公开(公告)号：EP2626942A2

公开(公告)日：2013-08-14

申请号：EP11830851.9

申请日：2011-09-23

申请人： LG Chem, Ltd.

发明人： LEE, Joo-Sung ,  HONG, Jang-Hyuk ,  KIM, Jong-Hun ,  RYU, Bo-Kyung

IPC分类号： H01M10/04 ,  H01M2/16 ,  H01M2/18 ,  H01M4/36 ,  H01M10/052

CPC分类号： H01M2/1686 ,  C08J5/2206 ,  H01M2/145 ,  H01M2/1633 ,  H01M2/18 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M10/052 ,  H01M10/52 ,  Y02E60/122 ,  Y02T10/7011

摘要： Disclosed is an electrochemical device. The electrochemical device includes: (a) a composite separator including a porous substrate, a first porous coating layer coated on one surface of the porous substrate, and a second porous coating layer coated on the other surface of the porous substrate; (b) an anode disposed to face the first porous coating layer; and (c) a cathode disposed to face the second porous coating layer. The first and second porous coating layers are each independently composed of a mixture including inorganic particles and a binder polymer. The first porous coating layer is thicker than the second porous coating layer. The electrochemical device has good thermal stability and improved cycle characteristics.

摘要翻译： 公开了一种电化学装置。 电化学装置包括：（a）复合隔膜，其包括多孔基材，涂覆在多孔基材的一个表面上的第一多孔涂层和涂覆在多孔基材的另一表面上的第二多孔涂层; （b）设置成面对第一多孔涂层的阳极; 和（c）设置成面对第二多孔涂层的阴极。 第一和第二多孔涂层各自独立地由包括无机颗粒和粘合剂聚合物的混合物组成。 第一多孔涂层比第二多孔涂层厚。 电化学装置具有良好的热稳定性和改善的循环特性。

公开(公告)号：EP2533328A2

公开(公告)日：2012-12-12

申请号：EP11739951.9

申请日：2011-01-14

申请人： LG Chem, Ltd.

发明人： KWON, Yo-Han ,  LEE, Joo-Sung ,  KIM, Je-Young ,  KIM, Jong-Hun

IPC分类号： H01M4/04 ,  H01M4/66 ,  H01M4/62 ,  H01M10/04

CPC分类号： H01M4/0404 ,  C23C18/1291 ,  H01M4/0411 ,  H01M4/139 ,  H01M4/621 ,  H01M4/622 ,  H01M4/623 ,  H01M4/667 ,  H01M4/668 ,  H01M4/765 ,  H01M10/0413 ,  H01M10/0436 ,  H01M10/052 ,  H01M10/0565 ,  H01M10/058 ,  H01M2004/025 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011 ,  Y10T29/49115

摘要： The present invention relates to a method for manufacturing a cable-type secondary battery comprising an electrode that extends longitudinally in a parallel arrangement and that includes a current collector having a horizontal cross section of a predetermined shape and an active material layer formed on the current collector, and the electrode is formed by putting an electrode slurry including an active material, a polymer binder, and a solvent into an extruder, by extrusion-coating the electrode slurry on the current collector while continuously providing the current collector to the extruder, and by drying the current collector coated with the electrode slurry to form an active material layer.

公开(公告)号：EP4372893A1

公开(公告)日：2024-05-22

申请号：EP22858762.2

申请日：2022-08-17

申请人： LG Chem, Ltd.

发明人： LEE, Joo-Sung ,  MUN, Sung Cik ,  HAN, Sung-Jae ,  KIM, Bong-Tae ,  JUNG, Kil-An

IPC分类号： H01M50/403 ,  H01M50/417 ,  H01M50/489 ,  H01M50/494 ,  H01M10/052 ,  C08J9/28

CPC分类号： Y02E60/10

摘要： The present disclosure relates to a method for manufacturing a crosslinked structure-containing separator for a lithium secondary battery, including the steps of: supplying polyolefin and a diluting agent to an extruder to extrude a polyolefin composition; molding and orienting the extruded polyolefin composition into the form of a sheet; dipping the oriented sheet in an extraction solution to extract the diluting agent, thereby providing a polyolefin-based porous support; and irradiating ultraviolet rays to the polyolefin-based porous support, wherein the extraction solution has an upper layer and a lower layer, the lower layer includes a photoinitiator and a solvent for the photoinitiator, the upper layer includes a non-solvent for the photoinitiator, and the photoinitiator is present in an amount of 0.01-0.3 parts by weight based on 100 parts by weight of the solvent for the photoinitiator. The present disclosure also relates to a crosslinked structure-containing separator for a lithium secondary battery obtained from the method, and a lithium secondary battery including the crosslinked structure-containing separator for a lithium secondary battery. The crosslinked structure-containing separator for a lithium secondary battery uses a minimized amount of photoinitiator to prevent degradation of the mechanical strength of the separator after crosslinking, while accomplishing crosslinking of the polyolefin porous support.

公开(公告)号：EP4336642A1

公开(公告)日：2024-03-13

申请号：EP22799180.9

申请日：2022-05-09

申请人： LG Chem, Ltd.

发明人： HAN, Sung-Jae ,  LEE, Joo-Sung ,  MUN, Sung Cik ,  LEE, A-Young ,  JUNG, Kil-An

IPC分类号： H01M50/417 ,  H01M50/489 ,  H01M50/451 ,  H01M50/403 ,  H01M10/052

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; and a photoinitiator having an oxidation potential at least 0.02 V higher than the fully charged voltage of the lithium secondary battery, a method for manufacturing the same, and a lithium secondary battery including the separator. The lithium secondary battery including the separator has excellent high-temperature safety and can improve the problem of degradation of capacity after high-temperature storage.

公开(公告)号：EP4329076A1

公开(公告)日：2024-02-28

申请号：EP22799181.7

申请日：2022-05-09

申请人： LG Chem, Ltd.

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

IPC分类号： H01M50/417 ,  H01M50/451 ,  H01M50/489 ,  H01M10/052 ,  H01M50/403

摘要： The present disclosure relates to a crosslinked structure-containing polyolefin porous support which has a number of double bonds present in the polyolefin chains of 0.01-0.6 per 1000 carbon atoms, as determined by 1 H-NMR, and includes a crosslinked structure having polymer chains interconnected directly with one another, a crosslinked structure-containing separator for a lithium secondary battery including the same and a method for manufacturing the same, and a lithium secondary battery including the separator. The crosslinked structure-containing separator for a lithium secondary battery has improved high-temperature safety, and thus can minimize degradation of the performance of a lithium secondary battery including the separator, even after storing the lithium secondary battery at high temperature.

公开(公告)号：EP4184699A2

公开(公告)日：2023-05-24

申请号：EP22742927.1

申请日：2022-01-25

申请人： Lg Chem, Ltd.

发明人： LEE, Joo-Sung ,  RYU, Bi-Oh ,  JUNG, Kil-An

IPC分类号： H01M50/446 ,  H01M50/449 ,  H01M50/489 ,  H01M10/052

摘要： The present disclosure relates to a separator having excellent safety and a lithium secondary battery including the same. The separator includes: a porous polymer substrate; and an organic/inorganic composite porous layer disposed on at least one surface of the porous polymer substrate and including inorganic particles and a binder polymer, wherein the inorganic particles have a BET specific surface area of 50-150 m 2 /g, the organic/inorganic composite porous layer has a thickness larger than the thickness of the porous polymer substrate, and the surface of the organic/inorganic composite porous layer has an arithmetic mean roughness of 100-500 nm.