| abstract |
The invention relates to the field of positive electrode materials for lithium batteries, in particular to a preparation method of nickel-cobalt-manganese oxide. It includes: 1) Dissolving soluble metal salts in water to prepare a salt solution, the total concentration of soluble metal salts in the salt solution is 50-120g/L; 2) Adding a buffering agent to the salt solution, the buffering agent can be mixed with The mass ratio of the soluble metal salt is (1~18):1000, and the intermediate liquid is obtained after continuous stirring at a speed of 80~200r/min for a period of time; 3) The intermediate liquid and the alkaline precipitant are added to the reaction vessel and heated react until it precipitates to form a slurry; 4) After cleaning the slurry, a spherical precursor is obtained, and the spherical precursor is placed in a low-pressure environment for heat treatment, and nickel-cobalt-manganese oxide is obtained after heat treatment. The preparation process of the present invention has low energy consumption and does not produce environmental pollutants containing ammonia nitrogen, and has the advantages of energy saving and environmental protection; the preparation method is simple and efficient, and the production rate per unit time of the industrialization process is large. |