公开(公告)号：US20230178733A1

公开(公告)日：2023-06-08

申请号：US17561523

申请日：2021-12-23

Applicant: Korea Institute of Ceramic Engineering and Technology

Inventor： Kwang-Chul ROH ,  Ji-Su CHAE ,  Dae-Soo JUNG ,  Jung-Hyun CHOI

IPC: H01M4/583 ,  H01M4/36 ,  H01M4/38 ,  H01M4/134 ,  H01M4/133 ,  H01M10/052

CPC classification number: H01M4/583 ,  H01M4/133 ,  H01M4/134 ,  H01M4/362 ,  H01M4/386 ,  H01M10/052 ,  H01M4/0471

Abstract: Disclosed is a silicon-carbon composite negative-electrode active material for a lithium secondary battery having improved electrochemical properties which contains a carbon material derived from a wood-based material and a compound containing an isocyanate functional group in order to improve unstable dispersibility of silicon-based particles used as a negative-electrode active material for a lithium secondary battery, thereby improving electrical conductivity and producing stable electrode slurry. Further, a method for producing the same, and a lithium secondary battery including the same are disclosed.