公开(公告)号：US20230078236A1

公开(公告)日：2023-03-16

申请号：US17939142

申请日：2022-09-07

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Eunjoo LEE ,  Yongseok KIM ,  Jaewon KIM ,  Jaehou NAH ,  Kyeu Yoon SHEEM

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/58 ,  H01M10/0525

Abstract: A negative active material for a rechargeable lithium battery and a rechargeable lithium battery, the negative active material includes a porous silicon-carbon composite that includes silicon, carbon, and magnesium silicate (MgSiO3), wherein the negative active material has a diffraction peak intensity ratio IMgSiO3(610)/ISi(111) of 0.001