公开(公告)号：US12132199B2

公开(公告)日：2024-10-29

申请号：US18207211

申请日：2023-06-08

申请人： LG Energy Solution, Ltd.

发明人： Byung Chun Park ,  Hong Kyu Park ,  Wang Mo Jung ,  Seong Hoon Kang

IPC分类号： H01M4/36 ,  C01G53/00 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M4/02

CPC分类号： H01M4/366 ,  C01G53/42 ,  C01G53/50 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  C01P2004/61 ,  C01P2004/84 ,  C01P2004/88 ,  H01M2004/021 ,  H01M2004/028

摘要： A positive electrode active material includes a core including a first lithium complex metal oxide, and a shell located surrounding the core and including a second lithium complex metal oxide, and further includes a buffer layer located between the core and the shell. The buffer layer includes a pore, and a three-dimensional network structure of a third lithium complex metal oxide which is connecting the core and the shell. Accordingly, the positive electrode active material is capable of enhancing an output property and a life property by minimizing destruction of the active material caused by a rolling process during the electrode preparation, maximizing reactivity with an electrolyte liquid, and by the particles that form the shell having a crystal structure with orientation facilitating lithium ion intercalation and deintercalation.