公开(公告)号：US20240182307A1

公开(公告)日：2024-06-06

申请号：US18406219

申请日：2024-01-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaoxia Chen ,  Xinxin Zhang ,  Chuying Ouyang ,  Yongsheng Guo ,  Jiarui Tian ,  Xiaoji Zheng ,  Yu Ma ,  Ben Liu

IPC: C01B32/05 ,  H01M4/02 ,  H01M4/587

CPC classification number: C01B32/05 ,  H01M4/587 ,  C01P2002/72 ,  C01P2002/82 ,  C01P2004/03 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/40 ,  H01M2004/027

Abstract: The present application provides a hard carbon, a method for preparing the same, a secondary battery comprising the same, and an electrical apparatus comprising the same, where an amount of generated CO2 is detected in thermal programmed desorption-mass spectrum (TPD-MS) to be less than or equal to 1.0 mmoL/g and an amount of generated CO is detected in thermal programmed desorption-mass spectrum to be less than or equal to 2.0 mmoL/g, when the hard carbon is heated from 50° C. to 1,050° C. The present application can improve both the capacity and the first coulomb efficiency of the hard carbon.