High-capacity nickel-rich precursor, positive electrode material, and preparation method thereof

The invention discloses a high-capacity nickel-rich precursor, a positive electrode material, and preparation method thereof. The preparation method specifically comprises the following steps: respectively preparing a mixed solution of nickel and manganese salts, an alkaline solution and an ammonia water solution, quickly preparing a precursor NixM1-x(OH)2 under certain conditions, and uniformly mixing the precursor with a lithium source through ball milling and spraying, thus obtaining the nickel-rich positive electrode material. The preparation method of the nickel-rich positive electrode material is short in reaction time, low in energy consumption and low in equipment requirement, and the preparation cost of the material is greatly reduced. In addition, the nickel-rich positive electrode material prepared by the method has the advantages of controllable particle size, uniform morphology, high specific discharge capacity, good electrochemical performance and the like. 本发明公开了一种高容量富镍前驱体、正极材料及其制备方法，具体为先分别制得镍、