Preparation method for manganese solid solution anode material of lithium ion battery material

The invention relates to a preparation method for a manganese solid solution anode material of a lithium ion battery material. The method is characterized in that nickel, manganese and aluminum ion mixed liquid is reacted with a precipitator under a nitrogen atmosphere, reaction products are aged, washed and dried to obtain a nickel-manganese-aluminum hydrogenate precursor, and the synthesized precursor has spherical shape, ideal granularity distribution and high compacting density. The precursor is mixed with a lithium-source compound and a doping compound, the mixture is secondarily sintered, and the manganese solid solution anode material is obtained. The synthesis process is simple, the process is easy to control, the energy consumption is low, the efficiency is high, the cost is low, and the industrialized production can be realized. The prepared precursor is in spherical shape, the particles are uniformly distributed, the compacting density is high, the discharging capacity of the battery is improved by doping the metal, and the cycling performance of the battery is stable.