公开(公告)号：US20190157714A1

公开(公告)日：2019-05-23

申请号：US16314252

申请日：2017-11-20

申请人： LG CHEM, LTD.

发明人： Jieun SONG ,  Doo Kyung YANG

IPC分类号： H01M10/0525 ,  H01M10/0567 ,  H01M10/42 ,  H01M4/134 ,  H01M4/1395 ,  H01M10/0569 ,  H01M4/131

摘要： A method for pretreating a lithium electrode, and a lithium metal battery, and in particular, a method for stabilizing a lithium electrode through pretreatment of being immersed in a composition for forming a solid electrolyte interphase, and a lithium metal battery including such a lithium electrode. Effects of decreasing interfacial resistance and enhancing Li charge and discharge efficiency are obtained when forming a solid electrolyte interphase (SEI) on a lithium electrode in advance using a pretreatment process of the lithium electrode, and then using the SEI layer-formed lithium electrode in a lithium metal battery.

公开(公告)号：US20200321579A1

公开(公告)日：2020-10-08

申请号：US16303337

申请日：2017-12-21

申请人： LG CHEM, LTD.

发明人： Jieun SONG ,  Kwonnam SOHN ,  Doo Kyung YANG ,  Yun Kyoung KIM

IPC分类号： H01M2/16 ,  H01M10/052

摘要： A separator capable of simultaneously solving the problems caused by lithium polysulfide and lithium dendrite generated in a conventional lithium-sulfur battery wherein the separator includes a porous substrate coated with graphene oxide and boron nitride on at least one side, and a lithium-sulfur battery including the same.

公开(公告)号：US20190319272A1

公开(公告)日：2019-10-17

申请号：US16470166

申请日：2018-03-13

申请人： LG CHEM, LTD.

发明人： Kihyun KIM ,  Doo Kyung YANG ,  Taek Gyoung KIM ,  Jieun SONG

IPC分类号： H01M4/62 ,  H01M4/36 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/38 ,  H01M10/052 ,  H01M4/04

摘要： A lithium electrode and a lithium secondary battery including the same, and in particular, to a lithium electrode including a lithium metal layer; and a surface treatment layer formed on the lithium metal layer, wherein the surface treatment layer includes a surface treatment compound including a functional group capable of bonding with lithium metal and a hydrocarbon group substituted with one or more fluorine. By being provided with a surface treatment layer including a specific functional group, the lithium electrode improves stability of lithium metal as well as suppressing side reactions on the surface, and thereby allows high capacity, high stability and long lifetime of a lithium secondary battery.

公开(公告)号：US20210151833A1

公开(公告)日：2021-05-20

申请号：US16753231

申请日：2018-10-11

申请人： LG CHEM, LTD.

发明人： Jieun SONG ,  Doo Kyung YANG ,  Seungbo YANG

IPC分类号： H01M50/449 ,  H01M10/052 ,  H01M50/431 ,  H01M50/414 ,  H01M10/0565 ,  H01M50/446

摘要： A separator including a porous base and a coating layer on at least one surface of the porous base, the coating layer including (a) a carbon nanotube including an oxygen functional group and (b) a lithium ion conducting polymer, and a lithium-sulfur battery including the same. Such a separator may be capable of resolving problems caused by lithium polysulfide occurring in a lithium-sulfur battery.

公开(公告)号：US20200328394A1

公开(公告)日：2020-10-15

申请号：US16303502

申请日：2017-12-21

申请人： LG CHEM, LTD.

发明人： Jieun SONG ,  Kwonnam SOHN ,  Doo Kyung YANG ,  Yun Kyoung KIM

IPC分类号： H01M2/16 ,  H01M10/052

摘要： A separator capable of simultaneously solving the problems caused by lithium polysulfides and lithium dendrites generated in a conventional lithium-sulfur battery wherein the separator includes a porous substrate alternately laminated with a graphene oxide layer and a boron nitride layer on at least one side thereof, and to a lithium-sulfur battery including the same.

公开(公告)号：US20200328391A1

公开(公告)日：2020-10-15

申请号：US16753217

申请日：2018-10-08

申请人： LG CHEM, LTD.

发明人： Jieun SONG ,  Kwonnam SOHN ,  Doo Kyung YANG

IPC分类号： H01M2/16 ,  H01M10/0525

摘要： A separator in which at least one side of a porous substrate has thereon a coating layer containing a partially reduced graphene oxide with a sheet shape and a lithium ion conductivity polymer, which can solve the problem caused by the lithium polysulfide which occurs in the conventional lithium secondary battery, and a lithium secondary battery.