公开(公告)号：US11773233B2

公开(公告)日：2023-10-03

申请号：US15743437

申请日：2016-10-17

Applicant: LG CHEM, LTD.

Inventor： Seokwon Kim ,  Se Hyun Kim ,  Tae Hyung Kim ,  Pyeong-Gi Kim ,  Suk Jo Choi ,  Dong Hyun Cho

IPC: C08K3/016 ,  C01B32/168 ,  C07F9/09 ,  C08K3/40 ,  C08K7/02 ,  C08L101/00 ,  C08K3/04 ,  C08J5/04 ,  C08K7/14 ,  C07F9/12 ,  C08K5/521

CPC classification number: C08K3/016 ,  C01B32/168 ,  C07F9/09 ,  C07F9/12 ,  C08J5/047 ,  C08K3/041 ,  C08K3/045 ,  C08K3/40 ,  C08K5/521 ,  C08K7/02 ,  C08K7/14 ,  C08L101/00 ,  C01B2202/02 ,  C01B2202/06 ,  C01B2202/26 ,  C01B2202/34 ,  C01B2202/36 ,  C01B2204/26 ,  C01B2204/32 ,  C08J5/042 ,  C08J5/043

Abstract: The present invention relates to a carbon composite material and a method for producing the same, and more particularly, to a carbon composite material capable of improving electrostatic dispersibility and flame retardancy, and a method for producing the same. The carbon composite material according to the present invention can be effectively applied to products requiring conductivity and flame retardancy.

公开(公告)号：US11542164B2

公开(公告)日：2023-01-03

申请号：US17049477

申请日：2019-06-07

Applicant: LG CHEM, LTD.

Inventor： Dong Hyun Kim ,  Houng Sik Yoo ,  Jin Myung Cha ,  Gye Min Kwon ,  Hyun Sik Chae ,  Dong Hyun Cho ,  Sang Hoon Choy ,  Hyeon Choi ,  Hyung Suk Cho

IPC: C01B32/174 ,  H01M4/62 ,  B82Y30/00 ,  B82Y35/00 ,  B82Y40/00

Abstract: The present invention relates to a carbon nanotube dispersion including carbon nanotubes, a polymer dispersant containing an amine, a phenolic compound including two or more aromatic rings, and an aqueous solvent, wherein the polymer dispersant and the phenolic compound including two or more aromatic rings are included in a weight ratio of 100:1 to 100:90, and having low viscosity and a small change of viscosity over time.

公开(公告)号：US20220259045A1

公开(公告)日：2022-08-18

申请号：US17735638

申请日：2022-05-03

Applicant: LG CHEM, LTD.

Inventor： Sung Jin Kim ,  Jae Keun Yoon ,  Dong Hyun Cho ,  Hyun Joon Kang ,  Byung Yul Choi ,  Duk Ki Kim ,  Hyun Woo Park ,  Hyo Sang You

IPC: C01B32/162 ,  H01B1/04 ,  B01J23/847

Abstract: The present invention relates to a bundle-type carbon nanotube which has a bulk density of 25 to 45 kg/m3, a ratio of the bulk density to a production yield of 1 to 3, and a ratio of a tap density to the bulk density of 1.3 to 2.0, and a method for preparing the same.

公开(公告)号：US11059009B2

公开(公告)日：2021-07-13

申请号：US15745790

申请日：2016-10-17

Applicant: LG CHEM, LTD.

Inventor： Kyung Yeon Kang ,  Jihee Woo ,  Seungyong Lee ,  Hyungsik Jang ,  Dong Hyun Cho

IPC: B01J2/20 ,  B01F7/08 ,  C01B32/174 ,  B30B11/22 ,  B30B11/24 ,  B01F7/02 ,  B01F15/02 ,  C01B32/168 ,  B82Y30/00 ,  B82Y40/00

Abstract: The apparatus for manufacturing carbon nanotube pellets according to the present invention provides carbon nanotube pellets with increased apparent density by using only a small amount of solvent. The carbon nanotube pellets produced by the apparatus according to the present invention can improve various problems generated by scattering of powders. And since the density of the pellet form is high, transport, transfer and improvement become easier. Therefore, it can be more effectively applied to the manufacturing of composite materials.

公开(公告)号：US11050061B2

公开(公告)日：2021-06-29

申请号：US15741676

申请日：2016-10-28

Applicant: LG Chem, Ltd.

Inventor： Ye Lin Kim ,  Jong Heon Seol ,  Kyung Yeon Kang ,  Sang Hoon Choy ,  Ji Hee Woo ,  Dong Hyun Cho

IPC: H01M4/62 ,  H01M10/052 ,  H01M4/139 ,  H01M4/04

Abstract: The present invention provides: a conductive material dispersed liquid containing a conductive material, a dispersant, and a dispersion medium, wherein the conductive material comprises bundle-type carbon nanotubes having a bulk density in a range of 10-50 kg/m3 and a conductivity satisfying the conditions of Equation 1 below, thereby exhibiting excellent dispersibility and conductivity; and a lithium secondary battery, which is manufactured using the conductive material dispersed liquid and thus can exhibit excellent battery functions, especially, excellent output characteristics at low temperatures: −X≤10 log R≤−0.6X  [Equation 1] (in Equation 1 above, X is a bulk density of the carbon nanotubes, and R is a powder resistance of the carbon nanotubes under a pressure of 10 to 65 MPa.).

公开(公告)号：US10665890B2

公开(公告)日：2020-05-26

申请号：US15578177

申请日：2016-09-09

Applicant: LG CHEM, LTD.

Inventor： Kyung Yeon Kang ,  Jong Heon Seol ,  Ji Hee Woo ,  Ye Lin Kim ,  Dong Hyun Cho ,  Sang Hoon Choy

IPC: H01M10/052 ,  H01M4/13 ,  H01M4/62 ,  H01M4/583 ,  C01B32/17 ,  C01B32/162 ,  C01B32/158 ,  H01M2/10

Abstract: The present invention provides a conductive material for a secondary battery, and a secondary battery containing the same, the conductive material comprising carbon nanotubes, having a secondary structure in which carbon nanotube units having a diameter of 20-150 nm are entangled, having a ratio of true density to bulk density (TD/BD) of 30-120, having a metal content of 50 ppm or less, and having both excellent dispersibility and high purity, thereby being capable of improving, by increasing the conductivity within an electrode, battery performance, particularly, battery performance at room temperature and low temperature when applied to a battery.

公开(公告)号：US09862614B2

公开(公告)日：2018-01-09

申请号：US14650519

申请日：2015-02-04

Applicant: LG CHEM, LTD.

Inventor： Kyoung Shil Oh ,  Jin Hee Oh ,  Ye Hon Kim ,  Dong Hyun Cho ,  Mi Ri Kim ,  Sung Min Yu ,  Je Kyun Lee

IPC: C01B33/158 ,  C01B33/16

CPC classification number: C01B33/1585 ,  C01B33/16 ,  C01P2006/11 ,  C01P2006/12

Abstract: Provided is a method for preparing a hydrophobic silica aerogel by using a Soxhlet extraction, and a hydrophobic silica aerogel prepared by using the method. Since the preparation method according to the present invention may simultaneously perform washing and drying of a hydrophobic silica wet gel as well as solvent substitution and may remove an extraction solvent without an additional separation process, a hydrophobic silica aerogel having low tap density and high specific surface area may be easily prepared.

公开(公告)号：US11987499B2

公开(公告)日：2024-05-21

申请号：US18115184

申请日：2023-02-28

Applicant: LG CHEM, LTD.

Inventor： Sung Jin Kim ,  Dong Hyun Cho ,  Jae Keun Yoon ,  Tae Hyung Kim ,  Og Sin Kim

IPC: C01B32/162 ,  B01J21/04 ,  B01J23/847 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08 ,  B82Y30/00 ,  B82Y40/00

CPC classification number: C01B32/162 ,  B01J21/04 ,  B01J23/8472 ,  B01J37/0219 ,  B01J37/04 ,  B01J37/088 ,  B82Y30/00 ,  B82Y40/00 ,  C01B2202/22 ,  C01B2202/36 ,  C01P2002/78 ,  C01P2004/03 ,  C01P2006/11

Abstract: The present invention relates to entangled-type carbon nanotubes which have a bulk density of 31 kg/m3 to 85 kg/m3 and a ratio of tapped bulk density to bulk density of 1.37 to 2.05, and a method for preparing the entangled-type carbon nanotubes.

公开(公告)号：US11565938B2

公开(公告)日：2023-01-31

申请号：US16624743

申请日：2018-11-27

Applicant: LG CHEM, LTD.

Inventor： Sung Jin Kim ,  Jae Keun Yoon ,  Dong Hyun Cho

IPC: C01B32/162 ,  B82Y40/00 ,  B01J21/04 ,  B01J23/847 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08 ,  B82Y30/00

Abstract: The present invention relates to a carbon nanotube composition including entangled-type carbon nanotubes and bundle-type carbon nanotubes, wherein the carbon nanotube composition has a specific surface area of 190 m2/g to 240 m2/g and a ratio of specific surface area to bulk density of 0.1 to 5.29.

公开(公告)号：US20210276871A1

公开(公告)日：2021-09-09

申请号：US16624743

申请日：2018-11-27

Applicant: LG CHEM, LTD.

Inventor： Sung Jin Kim ,  Jae Keun Yoon ,  Dong Hyun Cho

IPC: C01B32/162 ,  B01J23/847 ,  B01J21/04 ,  B01J37/04 ,  B01J37/08 ,  B01J37/02

Abstract: The present invention relates to a carbon nanotube composition including entangled-type carbon nanotubes and bundle-type carbon nanotubes, wherein the carbon nanotube composition has a specific surface area of 190 m2/g to 240 m2/g and a ratio of specific surface area to bulk density of 0.1 to 5.29.