公开(公告)号：US09997780B2

公开(公告)日：2018-06-12

申请号：US14765515

申请日：2014-10-31

申请人： LG CHEM, LTD.

发明人： Ji-Hye Park ,  Jae-Hyun Lee ,  Su-Rim Lee ,  Song-Taek Oh ,  Jung-Seok Choi ,  Hyeok-Moo Lee

IPC分类号： H01M4/505 ,  H01M10/052 ,  H01M4/131 ,  H01M4/50 ,  H01M4/02

CPC分类号： H01M4/505 ,  H01M4/131 ,  H01M4/50 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/028

摘要： The present disclosure relates to a positive electrode for a lithium secondary battery including an electrode current collector, and a positive electrode active material layer coated on at least a part of the electrode current collector, wherein the positive electrode active material layer includes a manganese-based positive electrode active material, and a porosity is from 30% to 35%, to improve high-temperature storage characteristics and high-temperature cycle characteristics.

公开(公告)号：US20150118542A1

公开(公告)日：2015-04-30

申请号：US14516739

申请日：2014-10-17

申请人： LG Chem, Ltd.

发明人： Su Rim Lee ,  Song-Taek Oh ,  Jung-Seok Choi ,  Hyeok-Moo Lee ,  Ji-Hye Park

IPC分类号： H01M10/058 ,  H01M10/052

CPC分类号： H01M10/058 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/049 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/446 ,  H01M10/52 ,  Y10T29/49108

摘要： The present disclosure provides a method for preparing a lithium secondary battery by bringing a first cell using a first cathode active material of formula (I) Li(LixMy-y′M′y′)O2-zAz  (I) wherein, x, y, y′, and z satisfy 0

摘要翻译： 本发明提供一种锂二次电池的制备方法，该方法是使用式（I）Li（LixMy-y'M'y'）O2-zAz（I）的第一正极活性物质使第一电池，其中x，y ，y'和z满足0

公开(公告)号：US20180097255A1

公开(公告)日：2018-04-05

申请号：US15548951

申请日：2016-04-27

申请人： LG Chem, Ltd.

发明人： Hye-Ran Jung ,  Hyeok-Moo Lee ,  Hyo-Sik Kim ,  Song-Taek Oh

IPC分类号： H01M10/0525 ,  H01M4/36 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/62

CPC分类号： H01M10/0525 ,  H01M4/04 ,  H01M4/13 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/366 ,  H01M4/587 ,  H01M4/622 ,  H01M10/04 ,  H01M10/0585

摘要： The present invention relates to an electrode for an electrochemical device and a method for manufacturing the same. More specifically, the present invention relates to an electrode for an electrochemical device having excellent electrolyte impregnation and improved battery output and lifecycle properties, and a method for manufacturing the electrode. The electrode according to the present invention enables an electrolyte to easily permeate into the electrode, thereby remarkably improving a lifecycle property or an output property due to high electrolyte impregnation. In addition, the method for manufacturing an electrode, according to the present invention, does not cause the deterioration of porosity of a lower electrode active material monolayer, the deterioration being caused by a step performed during the formation of an upper electrode active material monolayer.

公开(公告)号：US09484593B2

公开(公告)日：2016-11-01

申请号：US14762409

申请日：2014-10-31

申请人： LG CHEM, LTD.

发明人： Ji-Hye Park ,  Jae-Hyun Lee ,  Su-Rim Lee ,  Song-Taek Oh ,  Jung-Seok Choi ,  Hyeok-Moo Lee

IPC分类号： H01M2/02 ,  H01M2/16 ,  H01M10/04 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0583 ,  H01M4/13 ,  H01M10/052

CPC分类号： H01M10/0436 ,  H01M2/1653 ,  H01M2/166 ,  H01M2/1673 ,  H01M2/168 ,  H01M2/1686 ,  H01M4/13 ,  H01M4/622 ,  H01M4/623 ,  H01M10/0459 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0583 ,  H01M2220/30 ,  Y02E60/122 ,  Y02T10/7011

摘要： The present disclosure provides a stack-folding type electrode assembly in which a plurality of full cells or bicells as unit cells is stacked on top of each other and surrounded by a second separator, each cell including a positive electrode, a negative electrode, and a first separator interposed between the positive electrode and the negative electrode, wherein a first binder is coated on at least a partial surface of the first separator, a second binder is coated on at least a partial surface of the second separator, and a content of the second binder is higher than a content of the first binder, to inhibit a loose phenomenon inside a battery, make the battery less prone to expansion, and have deformation resistance to an external impact.

摘要翻译： 本公开内容提供了一种堆叠式电极组件，其中作为单元电池的多个全电池或双电池堆叠在彼此的顶部并且被第二隔板包围，每个电池包括正电极，负电极和 插入在正极和负极之间的第一隔板，其中第一粘合剂涂覆在第一隔板的至少部分表面上，第二粘合剂涂覆在第二隔膜的至少部分表面上， 第二粘合剂高于第一粘合剂的含量，以抑制电池内部的松动现象，使得电池不容易膨胀，并且具有对外部冲击的变形抗力。

公开(公告)号：US10720630B2

公开(公告)日：2020-07-21

申请号：US15515307

申请日：2015-12-08

申请人： LG CHEM, LTD.

发明人： Hyeok-Moo Lee ,  Song-Taek Oh

IPC分类号： H01M2/30 ,  H01M2/02 ,  H01M2/16 ,  H01M10/04 ,  H01M4/13 ,  H01M4/62 ,  H01M10/058 ,  H01M10/0525 ,  H01M10/42

摘要： A secondary battery having improved output characteristics is disclosed. The secondary battery according to the present invention accommodates a cell assembly including a plurality of cells connected in parallel, and an electrolyte together in one package, in which positive electrodes of a plurality of central cells disposed at a central part of the cell assembly have a loading energy density higher than that of positive electrodes of a plurality of side cells disposed at a side part, and the positive electrodes of the central cells have positive electrode material coating layers formed at surfaces thereof, which are thicker than those formed at surfaces of the positive electrodes of the side cells. Preferably, the total resistance of the side cells is lower than the total resistance of the central cells.

公开(公告)号：US10605870B2

公开(公告)日：2020-03-31

申请号：US15574356

申请日：2016-08-04

申请人： LG CHEM, LTD.

发明人： Hyo-Mi Kim ,  Hyeok-Moo Lee ,  Song-Taek Oh ,  Sol-Nip Lee

IPC分类号： G01R31/388 ,  H01M10/44 ,  G01R31/36 ,  H01M10/0525 ,  H02J7/00 ,  H01M10/42 ,  H01M10/48 ,  H02J7/04

摘要： Provided are a method of predicting a battery charge limit not to cause lithium (Li)-plating, and a battery charging method and apparatus capable of quickly charging a battery based on the battery charge limit. A battery charge limit prediction method according to the present disclosure includes (a) fabricating a three-electrode cell including a unit cell and a reference electrode, (b) measuring a negative electrode potential (CCV) based on a state of charge (SOC) while charging the three-electrode cell, and (c) determining a point at which the negative electrode potential is not dropped but starts to be constant, as a lithium (Li)-plating occurrence point, and setting the Li-plating occurrence point as a charge limit.

公开(公告)号：US09979051B2

公开(公告)日：2018-05-22

申请号：US14516739

申请日：2014-10-17

申请人： LG Chem, Ltd.

发明人： Su Rim Lee ,  Song-Taek Oh ,  Jung-Seok Choi ,  Hyeok-Moo Lee ,  Ji-Hye Park

IPC分类号： H01M10/058 ,  H01M10/052 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/04 ,  H01M10/44 ,  H01M10/0525 ,  H01M10/52

CPC分类号： H01M10/058 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/049 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/446 ,  H01M10/52 ,  Y10T29/49108

摘要： The present disclosure provides a method for preparing a lithium secondary battery by bringing a first cell using a first cathode active material of formula (I) Li(LixMy−y′M′y′)O2−zAz  (I) wherein, x, y, y′, and z satisfy 0

公开(公告)号：US09893393B2

公开(公告)日：2018-02-13

申请号：US14516831

申请日：2014-10-17

申请人： LG Chem, Ltd.

发明人： Su-Rim Lee ,  Song-Taek Oh ,  Jung-Seok Choi ,  Hyeok-Moo Lee ,  Ji-Hye Park

IPC分类号： H01M10/52 ,  H01M10/44 ,  H01M10/052

CPC分类号： H01M10/52 ,  H01M10/052 ,  H01M10/44 ,  Y02T10/7011

摘要： The present disclosure provides a method for removing gases generated in a lithium secondary battery using a cathode active material of the following formula (I) Li(LixMy−y′M′y′)O2−zAz  (I) wherein, x, y, y′, and z satisfy 0

公开(公告)号：US10056604B2

公开(公告)日：2018-08-21

申请号：US14574942

申请日：2014-12-18

申请人： LG Chem, Ltd.

发明人： Ji-Hye Park ,  Song-Taek Oh ,  Hyeok-Moo Lee

IPC分类号： H01M4/13 ,  H01M4/1315 ,  H01M4/36 ,  H01M4/62 ,  H01M4/131 ,  H01M4/505 ,  H01M10/052 ,  H01M4/525 ,  H01M2/16 ,  H01M4/58

CPC分类号： H01M4/1315 ,  H01M2/1646 ,  H01M2/1686 ,  H01M4/131 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/582 ,  H01M4/5825 ,  H01M4/622 ,  H01M4/623 ,  H01M4/624 ,  H01M4/625 ,  H01M10/052 ,  Y02T10/7011

摘要： The present disclosure refers to a cathode material composite having improved conductivity, and a cathode and electrochemical device having the cathode material composite. In accordance with one embodiment of the present disclosure, a conductive polymer is positioned on the surface of a shell present in the form of a tetragonal structure in the lithium manganese oxide, thereby enhancing electrical conductivity to be highly involved in reaction around 3V, and providing a conductive path to improve the capacity, life and rate characteristics of an electrochemical device.

公开(公告)号：US09786891B2

公开(公告)日：2017-10-10

申请号：US14436264

申请日：2014-10-31

申请人： LG Chem, Ltd.

发明人： Jung-Seok Choi ,  Song-Taek Oh ,  Su-Rim Lee ,  Hyeok-Moo Lee ,  Ji-Hye Park

IPC分类号： H01M2/16 ,  H01M4/62 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M2/18 ,  H01M10/04 ,  H01M10/0583 ,  H01M10/052

CPC分类号： H01M2/1686 ,  H01M2/1646 ,  H01M2/1653 ,  H01M2/18 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/622 ,  H01M10/0459 ,  H01M10/052 ,  H01M10/0583

摘要： An electrode assembly, comprises one or more first electrodes comprising a cathode; one or more second electrodes comprising an anode; and a separator sheet having a zigzag form interposed therebetween. The separator sheet comprises a first porous polymer substrate; a first coating layer formed on one surface of the first porous polymer substrate and comprising a polymer binder, the first coating layer being faced with the cathode; and a second coating layer formed on the other surface of the first porous polymer substrate and comprising a mixture a polymer binder and inorganic particles, the second coating layer being faced with the anode and having a composition, a thickness and a porosity different from those of the first porous coating layer. A separator has porous coating layers with a different composition, thickness or porosity formed on each surface thereof.