公开(公告)号：US20210151757A1

公开(公告)日：2021-05-20

申请号：US17043897

申请日：2019-09-10

申请人： LG CHEM, LTD.

发明人： Bong Soo KIM ,  Kwonnam SOHN

IPC分类号： H01M4/583 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/36 ,  H01M4/60

摘要： A sulfur-carbon composite and a lithium secondary battery including the same are discussed. More specifically, a network-shaped coating layer including a conductive polymer is formed on a surface of the sulfur-carbon composite, and thus the conductivity of the sulfur-carbon composite is enhanced and also, lithium ions move freely, and accordingly, when applied to lithium secondary batteries, the sulfur-carbon composite can enhance the performance of batteries.

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：US20200259168A1

公开(公告)日：2020-08-13

申请号：US16646080

申请日：2018-09-19

申请人： LG CHEM, LTD. ,  INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY

发明人： Eunkyung CHO ,  Suenghoon HAN ,  Myeong Jun SONG ,  Il To KIM ,  Kwonnam SOHN ,  Doo Kyung YANG ,  Jiwon KIM ,  Moo Whan SHIN

IPC分类号： H01M4/36 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/587 ,  H01M4/60 ,  C01B32/05

摘要： A carbon-sulfur composite including a carbonized metal-organic framework (MOF); and a sulfur compound introduced to at least a part of an outside surface and an inside of the carbonized metal-organic framework, wherein the carbonized metal-organic framework has a specific surface area of 1000 m2/g to 4000 m2/g, and the carbonized metal-organic framework has a pore volume of 0.1 cc/g to 10 cc/g, and a method for preparing the same.

公开(公告)号：US20200220169A1

公开(公告)日：2020-07-09

申请号：US16647892

申请日：2018-10-24

申请人： LG CHEM, LTD.

发明人： Eui Tae KIM ,  Kwonnam SOHN ,  Doo Kyung YANG

IPC分类号： H01M4/38 ,  H01M4/36 ,  H01M4/583 ,  H01M4/139 ,  H01M10/0525

摘要： A sulfur-carbon composite including porous carbon material, and sulfur, wherein at least a portion of an inside and a surface of the porous carbon material coated with the sulfur, the sulfur-carbon composite has a pore volume of 0.180 cm3/g to 0.300 cm3/g, and the sulfur-carbon composite has an average pore size of 40.0 nm to 70.0 nm, and a method of manufacturing the same. Also, a method of manufacturing a sulfur-carbon composite, which includes (a) mixing a porous carbon material with sulfur particles, wherein the sulfur particles have a particle size of 1 nm to 1 μm using a Henschel mixer; and (b) drying the resulting mixture of (a).

公开(公告)号：US20220002158A1

公开(公告)日：2022-01-06

申请号：US17281455

申请日：2019-11-08

申请人： LG CHEM, LTD.

发明人： Seungbo YANG ,  Kwonnam SOHN ,  Suenghoon HAN ,  Jangsoo LEE

IPC分类号： C01B32/198 ,  H01M10/052

摘要： A holey thermally expanded-reduced graphene oxide having high specific surface area and pore volume including pores on the surface, a method for preparing the same, and a sulfur-carbon composite and a lithium secondary battery including the same.

公开(公告)号：US20210234159A1

公开(公告)日：2021-07-29

申请号：US17052295

申请日：2019-06-04

申请人： LG CHEM, LTD.

发明人： Soohyun KIM ,  Kwonnam SOHN

IPC分类号： H01M4/38 ,  H01M4/583 ,  H01M4/36 ,  H01M4/62 ,  H01M10/44 ,  H01M10/36 ,  H01M4/66

摘要： A composite including a sulfur-carbon composite and a coating layer on a surface of the sulfur-carbon composite, the coating layer including a porous carbon material and a point contact binder is disclosed. Also disclosed is a method for preparing the same, and a positive electrode for a lithium-sulfur battery and a lithium-sulfur battery including the same.

公开(公告)号：US20210050587A1

公开(公告)日：2021-02-18

申请号：US16980151

申请日：2019-08-02

申请人： LG CHEM, LTD.

发明人： Dongwook LEE ,  Kwonnam SOHN

IPC分类号： H01M4/133 ,  H01M4/134 ,  H01M4/131 ,  H01M4/136 ,  H01M4/36 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/1393 ,  H01M4/1397 ,  H01M4/58 ,  H01M10/052

摘要： A positive electrode active material for a lithium secondary battery including a carbon material impregnated with catalyst particles, and a sulfur-carbon composite, a preparation method thereof, and a positive electrode for a lithium secondary battery, and the lithium secondary battery including the same.

公开(公告)号：US20200274154A1

公开(公告)日：2020-08-27

申请号：US16646490

申请日：2018-11-16

申请人： LG CHEM, LTD.

发明人： Eui Tae KIM ,  Suenghoon HAN ,  Kwonnam SOHN ,  Doo Kyung YANG

IPC分类号： H01M4/38 ,  H01M10/0525 ,  H01M4/583 ,  H01M4/36

摘要： A sulfur-carbon composite including a porous carbon material; and sulfur coated on at least a portion of an inside and a surface of the porous carbon material, wherein a pore volume of the sulfur-carbon composite is 0.04 to 0.400 cm3/g and a specific surface area of the sulfur-carbon composite is 4.0 to 30 m2/g, and a method for preparing the same.

公开(公告)号：US20180076466A1

公开(公告)日：2018-03-15

申请号：US15559919

申请日：2016-08-12

申请人： LG CHEM, LTD.

发明人： Eunkyung CHO ,  Kwonnam SOHN ,  Jonghyun CHAE ,  Doo Kyung YANG

IPC分类号： H01M4/96 ,  H01M4/86 ,  H01M4/88 ,  H01M12/08 ,  H01M4/38 ,  H01M12/02 ,  H01M2/16

摘要： The present invention relates to a lithium air battery and a method of manufacturing the same, wherein the lithium air battery comprises; a positive electrode which uses oxygen as an anode active material and is formed by laminating carbon black secondary particles which are composed of carbon black primary particles and graphene, and including macropores having a pore size range of exceeding 100 nm formed between the carbon black secondary particles; a negative electrode disposed to face the positive electrode; and a separation membrane disposed between the positive electrode and the negative electrode.The lithium air battery provides an increase in discharge capacity in a discharge test and a decrease in overvoltage, and can be manufactured by a simple method.

公开(公告)号：US20210184215A1

公开(公告)日：2021-06-17

申请号：US16760204

申请日：2018-10-29

申请人： LG CHEM, LTD.

发明人： Soohyun KIM ,  Kwonnam SOHN ,  Doo Kyung YANG

IPC分类号： H01M4/583 ,  H01M4/38 ,  H01M10/36 ,  H01M4/04 ,  H01M4/62

摘要： A sulfur-carbon composite including a porous carbon material; and sulfur present in at least a part of pores of the porous carbon material and on an outer surface of the porous carbon material, wherein an inner surface and the outer surface of the porous carbon material are doped with a carbonate compound. Also, a positive electrode and a secondary battery including the same. Further, a method of preparing a sulfur-carbon composite and a method of preparing a positive electrode.