Hollow ternary positive electrode material, precursor and preparation method of hollow ternary positive electrode material

The invention provides a hollow ternary positive electrode material precursor which is of a sphere-like structure composed of an inner core and a shell, primary particles of the inner core part are fine, thin, loose and porous, primary particles of the shell part are large and dense, the particle size distribution is narrow, and the specific surface area of the precursor is large. According to the precursor, a high-efficiency and high-productivity mode is adopted, pH values of two stages of a nucleation process and a particle growth process are accurately and reasonably controlled in a reaction system, meanwhile, a liquid-phase oxidation process is adopted in an inner core oxidation process, a non-oxidizing atmosphere is switched in a middle stage of the particle growth stage, and flow synthesis of metal salt is further improved in a later stage. The precursor with the morphology is favorable for improving the power performance, the rate and the cycle performance of the hollow ternary positive electrode mater