公开(公告)号：US10923715B2

公开(公告)日：2021-02-16

申请号：US16212255

申请日：2018-12-06

Applicant: SK INNOVATION CO., LTD. ,  UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)

Inventor： Jee Hee Lee ,  Joon Sup Kim ,  Nam Hyung Kim ,  Yeong Uk Son ,  Yoon Kwang Lee ,  Jae Phil Cho

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/1395 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/133 ,  H01M4/04 ,  H01M4/02

Abstract: Provided are an anode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery containing the same. The present invention provides an anode active material for a lithium secondary battery including: a carbon based particle; a first carbon coating layer positioned on the carbon based particle and including pores; a silicon coating layer positioned on the pores and/or a pore-free surface of the first carbon coating layer; and second carbon coating layer positioned on the silicon coating layer, a method of preparing the same, and a lithium secondary battery containing the same.