公开(公告)号：US20250091879A1

公开(公告)日：2025-03-20

申请号：US18937567

申请日：2024-11-05

Applicant: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE

Inventor： Seung Yol JEONG ,  Byeong Guk KIM ,  Ick Jun KIM ,  Sun Hye YANG ,  Geon Woong LEE ,  Hye Jung LEE ,  Soo Yeon JEONG ,  Jung Mo KIM ,  Ji Hyeon RYU ,  Hee Jin JEONG

IPC: C01B32/174

Abstract: The present invention relates to: a method for preparing a non-oxidized carbon nanotube dispersion through mechanical impregnation so as to apply carbon nanotubes having a hydrophobic surface and a bundle shape as a high-performance conductive material of a negative electrode or a positive electrode for a secondary battery through solvent dispersion without acid treatment; and a non-oxidized carbon nanotube dispersion for a conductive material of a secondary battery, prepared by the method.

公开(公告)号：US20220243365A1

公开(公告)日：2022-08-04

申请号：US17702933

申请日：2022-03-24

Applicant: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE

Inventor： Joong Tark HAN ,  Jung Hoon KIM ,  Joon Young CHO ,  Geon Woong LEE ,  Jong Hwan PARK ,  Seon Hee SEO ,  Soo Yeon JEONG ,  Seung Yol JEONG ,  Hee Jin JEONG

IPC: D01F9/14 ,  C01B32/198 ,  C01B32/184 ,  D01D1/02 ,  D01D5/06 ,  D01D10/02

Abstract: The present invention relates to a high heat-resistant graphene oxide, a method of manufacturing conductive graphene fiber from the same, and conductive graphene fiber manufactured by the method. The technical gist of the present invention is to provide high heat-resistant graphene oxide not having an oxygen-containing functional group such as a lactol group or a carboxyl group on the surface but having an oxygen-containing functional group such as an epoxy group or a hydroxyl group on the surface, thereby exhibiting thermal resistance and stability. In addition, the technical gist is also to provide a method of manufacturing conductive graphene fiber from the high heat-resistant graphene oxide and conductive graphene fiber manufactured by the method.

公开(公告)号：US20200295344A1

公开(公告)日：2020-09-17

申请号：US16891179

申请日：2020-06-03

Applicant: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE

Inventor： Seung Yol JEONG ,  Geon Woong LEE ,  Jong Hwan PARK ,  Sun Hye YANG ,  Soo Yeon JEONG ,  Ick Jun KIM ,  Seon Hee SEO ,  Hye Jung LEE ,  Hee Jin JEONG ,  Joong Tark HAN

IPC: H01M4/04 ,  H01M4/583 ,  H01M4/38 ,  H01M4/36 ,  C01B32/198

Abstract: The present invention relates to a reduced-graphene-oxide/silicon-metal-particle composite, a method of manufacturing the composite and an electrode for a secondary battery including the composite. The method of manufacturing the reduced-graphene-oxide/silicon-metal-particle composite includes preparing a reduced-graphene-oxide dispersion solution by reducing graphene oxide formed through cation-pi interaction, preparing a reduced-graphene-oxide/silicon-metal-particle dispersion solution by mixing the reduced-graphene-oxide dispersion solution with silicon metal particles, and manufacturing a composite powder having a core-shell structure by drying the reduced-graphene-oxide/silicon-metal-particle dispersion solution. Thereby, reduced graphene oxide can be formed using the graphene oxide dispersion solution having few defects and high purity obtained through cation-pi interaction, and dried to afford a composite powder having a core-shell structure, which is applicable to an electrode for a secondary battery.