公开(公告)号：US20220123302A1

公开(公告)日：2022-04-21

申请号：US17565450

申请日：2021-12-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Shushi DOU ,  Chunhua Hu ,  Yao Jiang ,  Qi Wu ,  Jinhua He ,  Bin Deng

IPC: H01M4/525 ,  H01M4/04 ,  H01M4/131 ,  H01M10/0525

Abstract: The present application discloses positive electrode active material, preparation method thereof, positive electrode plate, lithium-ion secondary battery and battery module, pack, and apparatus. The positive electrode active material includes a nickel-containing lithium composite oxide satisfying a chemical formula Li1+a[NixCoyMnzMb]O2, in the formula, M is a doping element at transition metal site, 0.5≤x