公开(公告)号：US20180358622A1

公开(公告)日：2018-12-13

申请号：US15569633

申请日：2016-10-19

申请人： LG CHEM, LTD.

发明人： Jung Woo YOO ,  Hyung Suk CHO ,  Ye Cheol RHO ,  Kyung Hwa WOO ,  Kwang Ho JEONG ,  Je Young KIM

IPC分类号： H01M4/62

CPC分类号： H01M4/62 ,  H01M4/13 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/622 ,  H01M4/625 ,  H01M10/052 ,  H01M2004/027 ,  Y02T10/7011

摘要： The present invention provides an anode slurry for a secondary battery and an anode comprising the same, in which the dispersibility of an anode active material is improved by increasing the adsorption amount of CMC with respect to the anode active material by adjusting the degree of substitution or physical properties such as molecular weight, and a CMC blend amount is reduced so as to increase the slurry solid content and reduce the resistance of a battery.

公开(公告)号：US20190386315A1

公开(公告)日：2019-12-19

申请号：US16487567

申请日：2018-08-14

申请人： LG CHEM, LTD.

发明人： Kyung Hwa WOO ,  Jeong Woo SHON ,  Jong Keon YOON ,  Hoejin HAH

IPC分类号： H01M4/62 ,  H01M4/36 ,  H01M4/04 ,  H01M10/052 ,  H01M4/134

摘要： A lithium electrode including: a lithium metal layer; an aluminum oxide layer on the lithium metal layer; and a carbon layer on the aluminum oxide layer, and a lithium secondary battery including the same. The aluminum oxide layer can prevent a direct reaction between a non-aqueous electrolyte and a lithium metal layer, and particularly, since the aluminum oxide layer does not have electrical conductivity, lithium deposition occurs between the lithium metal layer and aluminum oxide layer. Thus lithium metal is not deposited on the protection layer. In addition, the carbon layer functions for producing a stable solid electrolyte interface film thereon.

公开(公告)号：US20200067070A1

公开(公告)日：2020-02-27

申请号：US16344629

申请日：2018-06-29

申请人： LG CHEM, LTD.

发明人： Kyung Hwa WOO ,  Jae Hyun LEE ,  Jong Keon YOON ,  Hoe Jin HAH

IPC分类号： H01M4/04 ,  H01M4/38 ,  H01M10/052 ,  H01M4/1395

摘要： A method of manufacturing a secondary battery using lithium metal as a negative electrode, and more particularly, a method of manufacturing a secondary battery capable of removing an oxide film formed on a lithium metal by performing some initial discharges during the initial period of the activation process to thereby improve the cycling performance of the battery by allowing lithium to be uniformly precipitated. The result minimizes the reduction of ion conductivity by removing the oxide film formed on the surface of the lithium metal through the initial partial discharge and improves the battery cycle performance since the precipitation reaction of lithium becomes uniform.

公开(公告)号：US20200058931A1

公开(公告)日：2020-02-20

申请号：US16346948

申请日：2018-06-29

申请人： LG CHEM, LTD.

发明人： Jong Keon YOON ,  Hoe Jin HAH ,  Kyung Hwa WOO

IPC分类号： H01M4/1395 ,  H01M4/04 ,  H01M4/38 ,  B21D22/04 ,  B21D28/14 ,  B26F1/44

摘要： A 3-dimensional (3D) pattern puncher for punching a lithium metal electrode to provide one or more unit electrodes is provided. The 3D pattern puncher includes a mold punch configured to move up and down, the mold punch corresponding to a size of the unit electrode; a die corresponding to the mold punch; a mold blade disposed at an edge of the mold punch and configured to punch the lithium metal electrode to provide the one or more unit electrodes; and a 3D pattern positioned at an inner portion of the mold punch where the mold blade is not disposed.

公开(公告)号：US20190341603A1

公开(公告)日：2019-11-07

申请号：US16400340

申请日：2019-05-01

申请人： LG CHEM, LTD.

发明人： Jong Keon YOON ,  Kyung Hwa WOO ,  Hoejin HAH

IPC分类号： H01M4/139 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/62

摘要： A negative electrode for a lithium metal battery, a method of manufacturing the same, and a lithium metal battery including the same are provided.Specifically, one embodiment of the present invention provides a negative electrode for a lithium metal battery, the negative electrode including: a negative electrode current collector; a primer layer including an epoxy resin and a Ag conductive filler, the primer layer disposed on one surface or both surfaces of the negative electrode current collector; and a lithium metal (Li-metal) thin film disposed on the primer layer.

公开(公告)号：US20190058185A1

公开(公告)日：2019-02-21

申请号：US16079665

申请日：2017-08-18

申请人： LG CHEM, LTD.

发明人： Hye Jin LEE ,  Kyung Hwa WOO

IPC分类号： H01M4/133 ,  H01M10/0525 ,  H01M4/40 ,  H01M4/66 ,  H01M4/139

摘要： The present invention relates to a negative electrode including a multi-protective layer and a lithium secondary battery including the same, and the multi-protective layer prevents lithium dendrite growth on a surface of the electrode, and does not cause overpotential during charge and discharge since the protective layer itself does not function as a resistive layer, and therefore, is capable of preventing battery performance decline and securing stability when operating a battery.

公开(公告)号：US20180019477A1

公开(公告)日：2018-01-18

申请号：US15649818

申请日：2017-07-14

申请人： LG CHEM, LTD.

发明人： Kyung Hwa WOO

IPC分类号： H01M4/74 ,  H01M4/62 ,  H01M4/36 ,  H01M10/04 ,  H01M10/0525

CPC分类号： H01M4/742 ,  H01M4/366 ,  H01M4/622 ,  H01M4/661 ,  H01M4/667 ,  H01M4/668 ,  H01M4/808 ,  H01M10/0413 ,  H01M10/0525

摘要： Disclosed are an electrode including a perforated current collector, and a lithium secondary battery including the same, and according to the present disclosure, precipitation and elimination reactions of lithium metal are induced inside a perforation of a negative electrode current collector, and therefore, volume expansion of a cell is suppressed and battery performance is enhanced therefrom.