▎ 摘　　要

NOVELTY - Preparing high-performance ternary anode material by rapid expansion of supercritical fluids comprises (i) adding coating material into reaction kettle, pumping solvent, adjusting temperature and pressure to make solvent reach a supercritical state, the coating material reaches saturation in the supercritical solvent to obtain supercritical solution, (ii) further heating the supercritical solution and quickly spraying it into the reaction chamber through the first nozzle, at the same time, quickly spraying the ternary anode material to be coated into the reaction chamber through the second nozzle under the airflow, the two materials collide and react, and collecting the product in the reaction chamber, which is a uniformly coated high-performance ternary anode material, where the first nozzle and the second nozzle are located on the same horizontal line and inject materials horizontally so that the flow paths of the materials intersect. USE - The method is useful for preparing high-performance ternary anode material by rapid expansion of supercritical fluids. ADVANTAGE - The method: rapidly expands and depressurizes supercritical solution in very short time, and resulting pressure drop causes the dissolving ability of the supercritical solvent to decrease rapidly; supersaturates and precipitates coating material, and collides with the ternary material carried by the airflow to obtain uniformly coated high-performance ternary anode material; is simple to operate, has good coating effect, and improves the electrochemical performance of the material.