公开(公告)号：US10758882B2

公开(公告)日：2020-09-01

申请号：US15769194

申请日：2017-07-12

Applicant: LG CHEM, LTD.

Inventor： Ogsin Kim ,  Kwang Woo Yoon ,  Seungyong Lee ,  Dong Hyun Cho ,  Seokwon Kim ,  Jihee Woo

IPC: B01J6/00 ,  F23G7/06 ,  C01B32/16 ,  B01J2/16 ,  C08K3/04 ,  B82Y30/00 ,  B82Y40/00

Abstract: The present invention relates to a device for drying and collecting a product such as a carbon nanotube pellet or aggregate, which can accelerate solvent evaporation by inserting and dispersing high temperature gas into a drying column as well as by a heat source inside and outside of the column, and can quickly remove the evaporated solvent. Further, the device can be used for drying and collecting processes while minimizing product breakage by regulating the gas flow rate and controlling flow of the product in the column. Thus, the device can be effectively applied to mass production of a carbon nanotube pellet product.

公开(公告)号：US10647579B2

公开(公告)日：2020-05-12

申请号：US15746945

申请日：2016-10-17

Applicant: LG CHEM, LTD.

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

IPC: C01B32/174 ,  B30B11/24 ,  B01F7/08 ,  B30B11/22 ,  C01B32/168

Abstract: The method for producing carbon nanotube pellets according to the present invention can reduce the particle size of the carbon nanotubes contained in the pellet by a repetitive extrusion process to produce pellets having improved dispersion characteristics in a solvent. The present invention can improve the problems of the change of the content generated by scattering of powders and safety issues by using carbon nanotubes in the form of pellet. And since the density of the pellet form is higher than that of the powder form, transport, transfer and improvement become easier. Therefore, it can be more effectively applied to the manufacturing of composite materials.

公开(公告)号：US10468685B2

公开(公告)日：2019-11-05

申请号：US15762938

申请日：2016-07-27

Applicant: LG CHEM, LTD.

Inventor： Houngsik Yoo ,  Jongheon Seol ,  Jong Won Lee ,  Dong Hyun Kim ,  Gyemin Kwon ,  Yelin Kim ,  Jungkeun Yoo ,  Dong Hyun Cho ,  Sang Hoon Choy ,  Hyeon Choi ,  Kyungyeon Kang ,  Jihee Woo

IPC: H01B1/18 ,  H01M4/62 ,  H01M10/0525 ,  C01B32/174 ,  H01M4/139 ,  B82Y30/00 ,  B82Y40/00

Abstract: The present disclosure relates to a carbon nanotube dispersion liquid comprising bundle-type carbon nanotubes; a dispersion medium; and a polyvinyl butyral resin having a weight average molecular weight of greater than 50,000, a method for preparing the same, methods for preparing electrode slurry and an electrode using the same, and an electrode and a secondary battery prepared using the carbon nanotube dispersion liquid.

公开(公告)号：US09956546B2

公开(公告)日：2018-05-01

申请号：US14439168

申请日：2014-09-30

Applicant: LG CHEM, LTD.

Inventor： SungJin Kim ,  Dong Hyun Cho ,  KyungYeon Kang ,  Seungyong Son ,  Jinmyung Cha ,  Hyungsik Jang ,  Seungyong Lee ,  Jihee Woo

IPC: B01J23/847 ,  C01B32/162 ,  B01J21/18 ,  B01J23/89 ,  B01J35/00 ,  B01J23/881 ,  B01J23/882 ,  B01J35/02 ,  B01J37/10 ,  B01J37/08 ,  B01J37/02 ,  B82Y30/00 ,  B82Y40/00

CPC classification number: B01J23/8472 ,  B01J21/185 ,  B01J23/881 ,  B01J23/882 ,  B01J23/8906 ,  B01J23/8913 ,  B01J35/0013 ,  B01J35/002 ,  B01J35/0033 ,  B01J35/023 ,  B01J37/0203 ,  B01J37/0207 ,  B01J37/08 ,  B01J37/10 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/162 ,  C01B2202/22 ,  C01B2202/32 ,  Y10T428/2918 ,  Y10T428/2982

Abstract: Provided is a supported catalyst for producing carbon nanotubes with a large specific surface area. The supported catalyst enables the production of carbon nanotubes with a large specific surface area in high yield. Therefore, the catalyst can be used in various fields. Also provided are carbon nanotubes produced using the supported catalyst.

公开(公告)号：US09809458B2

公开(公告)日：2017-11-07

申请号：US14438816

申请日：2014-09-30

Applicant: LG CHEM. LTD.

Inventor： SungJin Kim ,  Seungyong Son ,  Dong Hyun Cho ,  KyungYeon Kang ,  Jinmyung Cha ,  Jihee Woo

IPC: C01B31/02 ,  B01J23/745 ,  B01J37/08 ,  B01J23/847 ,  B01J21/18 ,  B01J23/70 ,  B01J35/00 ,  C01B32/158 ,  C01B32/162 ,  B01J23/22 ,  B01J23/28 ,  B01J23/88 ,  B01J23/887

CPC classification number: C01B32/158 ,  B01J21/185 ,  B01J23/22 ,  B01J23/28 ,  B01J23/70 ,  B01J23/745 ,  B01J23/8472 ,  B01J23/88 ,  B01J23/8877 ,  B01J35/0026 ,  B01J37/08 ,  C01B32/162 ,  C01B2202/22

Abstract: The present invention relates to a method for producing a carbon nanotube aggregate whose bulk density is easily controllable. Therefore, the present invention provides a carbon nanotube aggregate suitable for use in various fields.