Ternary precursor is the key raw material for the preparation of ternary anode materials, usually nickel cobalt manganese oxide and nickel cobalt aluminum oxide, according to the different composition of elements, can be divided into NCM811 precursor, NCM622 precursor, NCM523 precursor and NCA precursor. In the lithium anode industry chain, the final performance of the anode material will inherit the morphology and structure characteristics of its precursor, and the quality of the precursor (morphology, particle size, particle size distribution, specific surface area, impurity content, vibration density, etc.) directly determines the physical and chemical indicators of the cathode sintering product.

At present, common ternary precursor synthesis methods include solution gel method, hydrothermal/solvothermal method, co-precipitation method, solid phase method, REDOX method, etc. The most widely used method in the industry is co-precipitation method, which has the advantages of accurate stoichiometry, simple and easy to operate, easy to control conditions, and short synthesis cycle. The disadvantage is that the addition of precipitant may cause the resulting particles to aggregate.