Double-shell nickel-cobalt-manganese-cerium quaternary oxide composite electrode material with flower-shaped multilevel structure and preparation method of double-shell nickel-cobalt-manganese-cerium quaternary oxide composite electrode material

The invention discloses a double-shell nickel-cobalt-manganese-cerium quaternary oxide composite electrode material with a flower-shaped multilevel structure and a preparation method of the double-shell nickel-cobalt-manganese-cerium quaternary oxide composite electrode material, and belongs to the technical field of functional material preparation. According to the method, nickel nitrate, cobalt nitrate, manganous nitrate and cerous nitrate are used as raw materials, isopropanol and polyhydroxy alcohol are used as solvents, a solid spherical nickel-cobalt-manganese-cerium precursor compound is prepared through a solvothermal method, the precursor compound is etched in water and an alkaline organic solvent, a core-shell precursor compound of a flower-shaped multilevel structure is obtained, and high-temperature calcination is carried out on the nickel-cobalt-manganese-cerium quaternary oxide composite electrode material to prepare the double-shell nickel-cobalt-manganese-cerium quaternary oxide composite elec