公开(公告)号：US20230246184A1

公开(公告)日：2023-08-03

申请号：US18118754

申请日：2023-03-08

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qifeng LI ,  Qilan ZHANG ,  Na LIU

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

CPC classification number: H01M4/525 ,  H01M4/0404 ,  H01M4/131 ,  H01M10/0525 ,  H01M2004/021

Abstract: The present application discloses a positive electrode active material, a positive electrode plate, a lithium-ion secondary battery, and an apparatus. The positive electrode active material satisfies a chemical formula Li1+x(NiaCobMnc)1-dMdO2-yAy, wherein M is one or more selected from Zr, Sr, B, Ti, Mg, Sn and Al, A is one or more selected from S, N, F, Cl, Br and I, −0.01≤x≤0.2, 0.12≤b/c≤0.9, 0.002≤b×c/a2≤0.23, a+b+c=1, 0≤d≤0.1, and 0≤y