公开(公告)号：US11569548B2

公开(公告)日：2023-01-31

申请号：US16753231

申请日：2018-10-11

Applicant: LG CHEM, LTD.

Inventor： Jieun Song ,  Doo Kyung Yang ,  Seungbo Yang

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

Abstract: 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：US12087967B2

公开(公告)日：2024-09-10

申请号：US17052918

申请日：2019-10-25

Applicant: LG CHEM, LTD.

Inventor： Kihyun Kim ,  Seungbo Yang ,  Jangsoo Lee

IPC: H01M50/431 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/443 ,  H01M50/449

CPC classification number: H01M50/431 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/443 ,  H01M50/449

Abstract: A functional separator capable of improving the capacity and lifetime of a battery by coating a material capable of reducing lithium polysulfide on a separator surface in order to resolve the problems caused by leaching of lithium polysulfide, a preparation method thereof and a lithium secondary battery including the same. The functional separator includes a base separator; a conductive carbon layer on the surface of the base separator; and a metal oxide formed on at least one of an interior and the surface of the conductive carbon layer.

公开(公告)号：US11967702B2

公开(公告)日：2024-04-23

申请号：US17298878

申请日：2020-05-13

Applicant: LG CHEM, LTD.

Inventor： Bong Soo Kim ,  Seungbo Yang

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/133 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/362 ,  H01M4/133 ,  H01M4/38 ,  H01M4/625 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2220/20

Abstract: Disclosed is a sulfur-carbon composite, and a positive electrode for a lithium secondary battery and a lithium secondary battery including the same. More specifically, since the carbon contained in the sulfur-carbon composite includes carbon of various shapes and in particular, includes sheet-type carbon in a certain content, when the sulfur-carbon composite is applied as a positive electrode active material of a lithium secondary battery, the performance of the lithium secondary battery may be improved by preventing the leaching of sulfur and improving the reaction rate at the positive electrode.

公开(公告)号：US12221348B2

公开(公告)日：2025-02-11

申请号：US17281455

申请日：2019-11-08

Applicant: LG CHEM, LTD.

Inventor： Seungbo Yang ,  Kwonnam Sohn ,  Suenghoon Han ,  Jangsoo Lee

IPC: C01B32/198 ,  C01B32/194 ,  H01M4/36 ,  H01M4/38 ,  H01M4/583 ,  H01M10/052

Abstract: 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：US11978888B2

公开(公告)日：2024-05-07

申请号：US16960464

申请日：2019-03-13

Applicant: LG CHEM, LTD. ,  SOGANG UNIVERSITY RESEARCH FOUNDATION

Inventor： Seungbo Yang ,  Kwonnam Sohn ,  Jun Hyuk Moon ,  Doo Kyung Yang ,  Donghee Gueon ,  Jeong Tae Hwang

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/38

CPC classification number: H01M4/364 ,  H01M4/0416 ,  H01M4/0471 ,  H01M4/362 ,  H01M4/38 ,  H01M2004/021 ,  H01M2004/028

Abstract: A ceria-carbon-sulfur (CeO2—C—S) composite including a ceria-carbon (CeO2—C) composite in which cylindrical carbon materials having ceria (CeO2) particles bonded to surfaces thereof are entangled and interconnected to each other in three dimensions; and sulfur introduced into at least a portion of an outer surface and an inside of the ceria-carbon composite, a method for preparing the same, and positive electrode for a lithium-sulfur battery and a lithium-sulfur battery including the same.

公开(公告)号：US11936064B2

公开(公告)日：2024-03-19

申请号：US17262527

申请日：2020-04-28

Applicant: LG CHEM, LTD.

Inventor： Kihyun Kim ,  Jangsoo Lee ,  Seungbo Yang ,  Soohyun Kim ,  Minsu Kim

IPC: H01M50/403 ,  H01M4/38 ,  H01M10/0525 ,  H01M50/411 ,  H01M50/431 ,  H01M50/449

CPC classification number: H01M50/403 ,  H01M4/38 ,  H01M10/0525 ,  H01M50/411 ,  H01M50/431 ,  H01M50/449

Abstract: In order to solve the problem caused by leaching of lithium polysulfide, disclosed is a functional separator, a method of manufacturing the same, and a lithium secondary battery including the same, which can improve the capacity and life of the battery by coating a material capable of reducing lithium polysulfide on the separator surface. The functional separator includes a base separator; and a redox active polymer-conductive carbon composite layer on a surface of the base separator.

公开(公告)号：US11862811B2

公开(公告)日：2024-01-02

申请号：US16972524

申请日：2020-04-28

Applicant: LG CHEM, LTD.

Inventor： Kihyun Kim ,  Seungbo Yang

IPC: H01M50/446 ,  H01M50/403 ,  H01M50/449 ,  H01M10/0525

CPC classification number: H01M50/446 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/449 ,  H01M2220/20

Abstract: A functional separator capable of improving the capacity and lifetime of a battery by coating a material capable of reducing lithium polysulfide on the surface of the separator, a method for manufacturing the same, and a lithium secondary battery including the same. The functional separator includes a base separator and a polyethylene oxide-conductive carbon composite layer present on the surface of the base separator.

公开(公告)号：US11795063B2

公开(公告)日：2023-10-24

申请号：US16651706

申请日：2018-09-19

Applicant: LG CHEM, LTD. ,  SOGANG UNIVERSITY RESEARCH FOUNDATION

Inventor： Seungbo Yang ,  Eunkyung Cho ,  Jun Hyuk Moon ,  Kwonnam Sohn ,  Doo Kyung Yang ,  Jaehyun Lee ,  Donghee Gueon

IPC: C01G23/047 ,  C01B32/158 ,  C01B17/00 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/02

CPC classification number: C01G23/047 ,  C01B17/00 ,  C01B32/158 ,  H01M4/0471 ,  C01P2004/12 ,  C01P2004/61 ,  C01P2006/12 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028

Abstract: A titania-carbon-sulfur composite including a titania-carbon composite prepared by mixing cylindrical carbon materials and titania (TiO2-x), in which some oxygen is reduced (i.e., x is less than 2), to have a structure in which cylindrical carbon materials are entangled and interconnected in three dimensions; and sulfur introduced into at least a part of the external surface and inside of the titania-carbon (TiO2—C) composite, and a method for preparing the same.

公开(公告)号：US11038194B2

公开(公告)日：2021-06-15

申请号：US16094440

申请日：2018-02-28

Applicant: LG CHEM, LTD. ,  SOGANG UNIVERSITY RESEARCH FOUNDATION

Inventor： Seungbo Yang ,  Eunkyung Cho ,  Jun Hyuk Moon ,  Kwonnam Sohn ,  Doo Kyung Yang ,  Donghee Gueon

IPC: H01M10/52 ,  H01M4/58 ,  H01M4/13 ,  H01M4/38 ,  H01M4/136 ,  H01M4/139 ,  H01M4/04 ,  H01M4/62 ,  H01M4/1397 ,  H01M4/02 ,  H01M10/052

Abstract: A carbon-sulfur composite including a carbon aggregate and sulfur, a method for preparing the same, and a positive electrode and a lithium-sulfur battery including the same.