公开(公告)号：US20250062310A1

公开(公告)日：2025-02-20

申请号：US18680217

申请日：2024-05-31

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jihyun HONG ,  Minah LEE ,  Jinkwan CHOI ,  Hun-Gi JUNG ,  Dong-Ik KIM

IPC: H01M4/04 ,  H01M4/02 ,  H01M4/485 ,  H01M4/62

Abstract: Provided are a prelithiation method of a silicon-based active material, the prelithiation method including step S1 of immersing the silicon-based active material in a prelithiation solution including an organic solvent and a lithium-hydrocarbon molecule complex, step S2 of obtaining a powder by washing the silicon-based active material with the organic solvent and drying the silicon-based active material, and step S3 of performing a heat treatment on the powder at a temperature of 400° C. to 800° C. in an inert gas atmosphere, and a silicon-based active material prelithiated by the method.