公开(公告)号：US20230282821A1

公开(公告)日：2023-09-07

申请号：US18315511

申请日：2023-05-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhenguo Zhang ,  Jingpeng Fan ,  Xingkai Hu ,  Sihui Wang ,  Qiang Chen ,  Na Liu

IPC: H01M4/505 ,  H01M4/525 ,  H01M4/131 ,  C01G53/00

CPC classification number: H01M4/505 ,  H01M4/525 ,  H01M4/131 ,  C01G53/54 ,  H01M2004/021

Abstract: A spinel-type nickel-manganese-lithium-containing composite oxide, a preparation method thereof, and a secondary battery and an electric apparatus containing the same are provided. A body material of the spinel-type nickel-manganese-lithium-containing composite oxide is represented by a general formula LixNiyMnzMmO4Qq, and both element P and one or more elements selected from elements Nb, W, and Sb are doped in the body material, where based on mass of the spinel-type nickel-manganese-lithium-containing composite oxide, doping content k of the element P satisfies 0.48 wt %≤k≤3.05 wt %, doping content g of the one or more elements selected from the elements Nb, W, and Sb satisfies 0.05 wt %≤g≤0.31 wt %, and 2≤k/g≤20. The secondary battery provided in this application has good high-temperature storage performance and high-temperature cycling performance.