公开(公告)号：US20240182307A1

公开(公告)日：2024-06-06

申请号：US18406219

申请日：2024-01-08

申请人： CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

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

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

摘要： 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.

公开(公告)号：US20240047756A1

公开(公告)日：2024-02-08

申请号：US18489849

申请日：2023-10-19

申请人： CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

发明人： Xiaolong Li ,  Xinxin Zhang ,  Wenguang Lin ,  Xiaoxia Chen ,  Ben Liu ,  Shikang Yao ,  Jiadian Lan

IPC分类号： H01M10/0569 ,  H01M10/625 ,  H01M10/0585 ,  H01M4/133 ,  H01M50/103 ,  H01M50/209 ,  H01M50/249

CPC分类号： H01M10/0569 ,  H01M10/625 ,  H01M10/0585 ,  H01M4/133 ,  H01M50/103 ,  H01M50/209 ,  H01M50/249

摘要： This application relates to a secondary battery, a battery module, a battery pack, and an electric apparatus. The secondary battery includes: a negative electrode plate including a negative electrode current collector and a negative electrode film layer disposed on the negative electrode current collector, the negative electrode film layer containing a carbon material; a positive electrode plate including a positive electrode current collector and a positive electrode active material layer disposed on the positive electrode current collector, the positive electrode active material layer containing a sodium-ion active material; and an electrolyte disposed between the negative electrode plate and the positive electrode plate, the electrolyte containing sodium salt and lithium salt.