| abstract |
The present invention provides a preparation method of a ternary precursor material, comprising the following steps: S1, weighing a nickel source, a cobalt source and a manganese source according to a predetermined ratio and dissolving them in deionized water to form a first mixed solution; S2, The first mixed solution, the first strong base solution and the complexing agent are added to the first reactor; S3, the crystal seed obtained by the reaction in S2 is added to the second reactor, and then the second complex is added to the second reactor. The mixture, the second mixed solution and the second strong lye solution are added to the second reactor and fully reacted; S4, the reaction product obtained by fully reacting in S3 is transferred to the aging tank to continue the reaction, and then the The precipitate is transferred to the filter press for solid-liquid separation, and the precipitate is washed with deionized water; S5, the precipitate obtained in S4 is dried in an oxygen-rich atmosphere to obtain a ternary precursor material. At the same time, the present invention also provides a ternary precursor material. |