公开(公告)号：US10758898B2

公开(公告)日：2020-09-01

申请号：US14914462

申请日：2015-06-08

Applicant: LG CHEM, LTD.

Inventor： SungJin Kim ,  Jihee Woo ,  Dongchul Lee ,  Seungyong Son ,  KwangWoo Yoon ,  Seungyong Lee ,  Eugene Oh ,  Jinmyung Cha ,  Hyun Woo Park ,  Hyungsik Jang

IPC: B32B9/00 ,  B01J37/02 ,  B01J23/745 ,  B01J23/847 ,  B01J23/882 ,  B01J23/887 ,  B01J23/75 ,  B01J23/881 ,  C01B32/162 ,  B01J35/02 ,  B01J37/08 ,  B01J37/10 ,  B01J21/18

Abstract: The present invention relates to a supported catalyst that can be used to produce a carbon nanotube aggregate with high bulk density, a method for preparing the supported catalyst, a carbon nanotube aggregate produced using the supported catalyst, and a method for producing the carbon nanotube aggregate. According to the present invention, the bulk density of the carbon nanotube aggregate is easily controllable. Therefore, the carbon nanotube aggregate is suitable for use in various fields.

公开(公告)号：US10857524B2

公开(公告)日：2020-12-08

申请号：US16080898

申请日：2017-03-21

Applicant: LG CHEM, LTD.

Inventor： Kyung Yeon Kang ,  Yelin Kim ,  Jihee Woo ,  Jung Keun Yoo ,  Dong Hyun Cho

IPC: C01B32/158 ,  B01J23/84 ,  C08J5/00 ,  C08K3/04 ,  C08K7/22 ,  H01M4/62 ,  H01M10/0525 ,  C01B32/162 ,  C01B32/17 ,  D01F9/127 ,  B01J23/847

Abstract: The carbon nanotubes according to the present invention can provide higher conductivity by allowing the BET and crystal size to satisfy the conditions expressed by formula 1 below, and consequently, can improve the conductivity of a carbon composite material containing the carbon nanotubes. Lc×[Specific surface area of CNT (cm2/g)]1/2>80  [Formula 1] wherein, Lc is crystal size measured by X-ray diffraction.

公开(公告)号：US10541067B2

公开(公告)日：2020-01-21

申请号：US15747606

申请日：2016-10-17

Applicant: LG CHEM, LTD.

Inventor： Kyung Yeon Kang ,  Yelin Kim ,  Jihee Woo ,  Seungyong Lee ,  Hyungsik Jang ,  Dong Hyun Cho ,  Sang Hoon Choy

IPC: H01B1/24 ,  B30B11/24 ,  C04B35/626 ,  C04B35/83 ,  C01B32/00 ,  B30B11/22 ,  C01B32/991 ,  B01F7/08 ,  C04B35/52

Abstract: The carbon nanotube pellets according to the present invention are produced by using only a small amount of solvent and have increased apparent density. 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 rather than carbon nanotubes in the form of powder in composite materials. 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：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：US20180162734A1

公开(公告)日：2018-06-14

申请号：US15123180

申请日：2016-02-26

Applicant: LG CHEM, LTD.

Inventor： KyungYeon Kang ,  DongHyun Cho ,  SungJin Kim ,  Seungyong Lee ,  Jihee Woo

IPC: C01B32/162 ,  B01J21/04 ,  B01J37/02 ,  B01J6/00

CPC classification number: C01B32/162 ,  B01J6/004 ,  B01J21/04 ,  B01J37/0205 ,  B01J2523/842 ,  B01J2523/845 ,  B01J2523/847 ,  C01B32/05 ,  C01B2202/32 ,  C01P2006/12

Abstract: The present invention relates to a method for producing large-diameter, low-density carbon nanotubes. The method uses a catalyst containing spherical α-alumina that is capable of controlling the growth of carbon nanotubes without deteriorating the quality of the carbon nanotubes. The use of the catalyst makes the carbon nanotubes highly dispersible.

公开(公告)号：US20150274529A1

公开(公告)日：2015-10-01

申请号：US14438165

申请日：2014-09-30

Applicant: LG Chem, Ltd.

Inventor： SungJin Kim ,  Seungyong Son ,  Jihee Woo ,  Dongchul Lee ,  KyungYeon Kang

IPC: C01B31/02 ,  B01J23/847 ,  B01J23/881 ,  B01J21/02 ,  B01J23/882

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 method for preparing a supported catalyst that enables the production of carbon nanotubes having a large specific surface area in high yield. Carbon nanotubes produced using the supported catalyst are also provided. The carbon nanotubes are suitable for use in various applications due to their large specific surface area and high yield.

Abstract translation: 提供一种制备能够以高产率生产具有大比表面积的碳纳米管的负载型催化剂的方法。 还提供了使用负载催化剂制备的碳纳米管。 碳纳米管由于其比表面积大，产率高而适用于各种应用。

公开(公告)号：US11090635B2

公开(公告)日：2021-08-17

申请号：US14438165

申请日：2014-09-30

Applicant: LG CHEM, LTD.

Inventor： SungJin Kim ,  Seungyong Son ,  Jihee Woo ,  Dongchul Lee ,  KyungYeon Kang

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

Abstract: Provided is a method for preparing a supported catalyst that enables the production of carbon nanotubes having a large specific surface area in high yield. Carbon nanotubes produced using the supported catalyst are also provided. The carbon nanotubes are suitable for use in various applications due to their large specific surface area and high yield.

公开(公告)号：US10399855B2

公开(公告)日：2019-09-03

申请号：US15123180

申请日：2016-02-26

Applicant: LG CHEM, LTD.

Inventor： KyungYeon Kang ,  DongHyun Cho ,  SungJin Kim ,  Seungyong Lee ,  Jihee Woo

IPC: C01B32/162 ,  C01B32/05 ,  B01J6/00 ,  B01J21/04 ,  B01J37/02

Abstract: The present invention relates to a method for producing large-diameter, low-density carbon nanotubes. The method uses a catalyst containing spherical α-alumina that is capable of controlling the growth of carbon nanotubes without deteriorating the quality of the carbon nanotubes. The use of the catalyst makes the carbon nanotubes highly dispersible.

公开(公告)号：US10141574B2

公开(公告)日：2018-11-27

申请号：US15577099

申请日：2016-09-05

Applicant: LG CHEM, LTD.

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

IPC: H01M4/62 ,  C08C19/02 ,  C09D109/02 ,  H01M4/04 ,  H01M4/36 ,  C09C1/44 ,  C08L15/00 ,  H01M4/13 ,  C01B32/174 ,  B82Y30/00 ,  B82Y40/00

Abstract: The present disclosure relates to a carbon nanotube dispersion including carbon nanotubes, a dispersion medium, and partially hydrogenated nitrile rubber having a residual double bond (RDB) value of 0.5% by weight to 40% by weight calculated according to Mathematical Formula 1, a method for preparing the same, and methods for preparing electrode slurry and an electrode using the same.

公开(公告)号：US20150273441A1

公开(公告)日：2015-10-01

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 ,  C01B31/00 ,  C01B31/02 ,  B01J35/02

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.

Abstract translation: 提供一种用于制造具有大比表面积的碳纳米管的负载型催化剂。 负载型催化剂能够以高收率生产比表面积大的碳纳米管。 因此，催化剂可用于各种领域。 还提供了使用负载催化剂制备的碳纳米管。