公开(公告)号：US11897770B2

公开(公告)日：2024-02-13

申请号：US17101198

申请日：2020-11-23

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyeon Su Jeong ,  Seung Min Kim ,  Sook Young Moon ,  Dong Myeong Lee

IPC: D01D5/00 ,  C01B32/168 ,  D01F9/12 ,  D01D5/06 ,  D01F11/10

CPC classification number: C01B32/168 ,  D01D5/0046 ,  D01D5/06 ,  D01F9/12 ,  C01P2004/03 ,  C01P2006/10 ,  D01F11/10

Abstract: Disclosed is a method for mass-producing densified carbon nanotube fiber. The method includes preparing carbon nanotube fiber, swelling the carbon nanotube fiber by applying an acid solution thereto, and stretching the carbon nanotube fiber, coagulating the stretched carbon nanotube fiber so as to remove the acid solution present therein, and drying the coagulated carbon nanotube fiber.

公开(公告)号：US20250042746A1

公开(公告)日：2025-02-06

申请号：US18486319

申请日：2023-10-13

Applicant: Hyundai Motor Company ,  Kia Corporation ,  Korea Institute of Science and Technology

Inventor： Gwan Sik Kim ,  Kyong Hwa Song ,  Deok Woo Yun ,  Hyeon Su Jeong ,  Seung Min Kim ,  Nam Dong Kim ,  Sung Ju Lee

IPC: C01B32/174 ,  H01G11/36

Abstract: The present disclosure describes to a method embodiment for preparing a carbon nanotube composite that includes performing a first ultrasonic treatment on a first mixture containing a carbon nanotube (CNT) fiber and an acid to form a carbon nanotube fiber swollen body, and performing a second ultrasonic treatment on a second mixture containing the carbon nanotube fiber swollen body, an aromatic monomer, and an initiator to form a carbon nanotube composite including a surface coated with an aromatic monomer-derived conductive polymer, and an embodiment of the carbon nanotube composite prepared therefrom.

公开(公告)号：US10246333B1

公开(公告)日：2019-04-02

申请号：US16005065

申请日：2018-06-11

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Seung Min Kim ,  Hyeon Su Jeong ,  Jae Geun Lee ,  Dong Myeong Lee ,  Hun Su Lee ,  Young Kwan Kim ,  Jun Beom Park

IPC: D01F9/12 ,  C01B32/17 ,  C08K3/04 ,  C01B32/162 ,  B82Y40/00 ,  B82Y30/00

Abstract: Provided is a method for continuously manufacturing carbon nanotube fibers with high strength and high conductivity, which includes synthesizing carbon nanotube fibers by direct spinning; treating the carbon nanotube fibers with a strong acid while applying tension thereto; and washing the carbon nanotube fibers treated with the strong acid.

公开(公告)号：US11332372B2

公开(公告)日：2022-05-17

申请号：US16923092

申请日：2020-07-08

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Seung Min Kim ,  Sung Hyun Lee ,  Jun Beom Park ,  Ji Hong Park ,  Dong Myeong Lee ,  Sook Young Moon ,  Hyeon Su Jeong

IPC: C01B32/164 ,  C01B32/162 ,  B82Y30/00 ,  B82Y40/00

Abstract: The present disclosure provides an apparatus capable of continuously producing carbon nanotubes having high crystallinity, a low residual catalyst content and a high aspect ratio. The apparatus for producing carbon nanotubes includes: a reaction unit configured to synthesize carbon nanotubes (CNTs), a supply unit configured to supply a carbon source to the reaction unit through a supply pipe; and a collection unit configured to collect carbon nanotubes discharged from the reaction unit, wherein the reaction unit may include a chemical vapor deposition reactor.