公开(公告)号：US20220135884A1

公开(公告)日：2022-05-05

申请号：US17452881

申请日：2021-10-29

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Young-Pyo JEON ,  Seung Hyun KO ,  Seung Jae HA ,  Min Seong JO

IPC: C10C3/14 ,  C01B32/05 ,  C10C3/00 ,  C08L95/00 ,  H01M4/587 ,  H01M10/0525 ,  D01F9/155

Abstract: The present disclosure relates to a method of preparing an anisotropic pitch for carbon fiber, and more particularly, to a method of preparing an anisotropic pitch of preparing a pitch having a low softening point by thermally polymerizing heavy oil or residue oil generated in an oil refining process, extracting only a mesogen component, and then heat-treating at a high temperature for a short time. The anisotropic pitch prepared in the present disclosure has advantages of exhibiting the anisotropic content of 100% and controlling the anisotropic content only a simple temperature control as desired and may be used as a precursor of a high value-added carbon material such as carbon fiber and an anode material for a lithium secondary battery.

公开(公告)号：US20230002680A1

公开(公告)日：2023-01-05

申请号：US17664301

申请日：2022-05-20

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Young-Pyo JEON ,  Seung Jae HA ,  Min Seong JO ,  Hyunsig KIL ,  Hyo Cheol LEE ,  Seung Hyun KO

IPC: C10C3/08 ,  C10C3/00 ,  C10C3/02

Abstract: Provided are a method for manufacturing a high yield and high performance mesophase pitch and a high yield and high performance mesophase pitch manufactured therefrom by hydrogenating, mesophase formation, thin film evaporation, solvent-extracting, filtering and then drying to obtain only mesogen components in flow-domained mesophase pitch and then mixing the mesogen components with an isotropic pitch as a solvent component. Further, the high yield mesophase pitch of the present disclosure exhibits high spinnability while maintaining whole anisotropy and exhibits a much higher production yield than existing mesophase pitches.

公开(公告)号：US20240166522A1

公开(公告)日：2024-05-23

申请号：US18282815

申请日：2022-03-29

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Young-Pyo JEON ,  Seung-Hyun KO ,  Hyun-Sig KIL ,  Seung-Jae HA ,  Hyo-Cheol LEE ,  Min-Seong JO

IPC: C01B32/205 ,  H01M4/02 ,  H01M4/583 ,  H01M10/052

CPC classification number: C01B32/205 ,  H01M4/583 ,  H01M10/052 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/40 ,  H01M2004/027

Abstract: The present invention provides: a method for preparing a petcoke-based artificial graphite negative electrode material for a lithium secondary battery, in which low-grade petcoke is used as a raw material, and artificial graphite having a high degree of graphitization is prepared through leaching and acid treatment of pulverized/classified low-grade petcoke in an acidic solution, followed by carbonization and graphitization; an artificial graphite negative electrode material for a lithium secondary battery, prepared thereby; and a lithium secondary battery.