公开(公告)号：US20240417275A1

公开(公告)日：2024-12-19

申请号：US18723511

申请日：2022-07-29

Applicant: GEM (WUXI) ENERGY MATERIALS CO., LTD.

Inventor： Kaihua XU ,  Wei LI ,  Dechong LIU ,  Jun XIE ,  Ningjing LIAO ,  Yang SHI ,  Xiaoyan ZHOU ,  Yujun CHEN ,  Shiguo XU

IPC: C01G53/00 ,  C30B29/22 ,  H01M4/02 ,  H01M4/36 ,  H01M4/525 ,  H01M4/62 ,  H01M10/42

Abstract: A method of preparing lithium nickel manganese cobalt oxide high-nickel single-crystal positive electrode material comprises the following steps: mixing and ball milling nickel cobalt manganese hydroxide with a lithium source, zirconium oxide, tungsten oxide, and sodium carbonate, then performing primary sintering, pulverizing, and then obtaining an lithium nickel manganese cobalt oxide high-nickel single-crystal positive electrode material intermediate, the temperature of the primary sintering being 50-150° C. higher than a normal sintering temperature; and evenly mixing the lithium nickel manganese cobalt oxide high-nickel single-crystal positive electrode material intermediate and a coating agent, and then performing secondary sintering to obtain the lithium nickel manganese cobalt oxide high-nickel single-crystal positive electrode material.