▎ 摘　　要

NOVELTY - A graphene composite lithium ion battery ternary anode material preparing method involves performing crystal-coprecipitation method to prepare three-element anode material precursor. Ternary lithium ion battery anode material is prepared, followed by mixing graphene or graphene oxide with a dispersing agent, a solvent mixed ultrasonic dispersion or mechanically stirring, forming graphene or graphene oxide dispersion, adding above prepared anode material to the dispersion, milling, drying, heating, cooling and sifting through 300 mesh screen to obtain finished product. USE - Method for preparing graphene composite lithium ion battery ternary anode material. ADVANTAGE - The anode material greatly reduces cell polarization, a large electric current discharge property of multiplying power, and maintains high discharge capacity and a long circulation service life, and can be prepared in simple, low energy consumption is low, and easy manner. DETAILED DESCRIPTION - A graphene composite lithium ion battery ternary anode material preparing method involves performing crystal-coprecipitation method to prepare three-element anode material precursor by mixing nickel salt, manganese and cobalt salts with an aqueous solution of a salt, where themolar ratio of the nickel-manganese-cobalt is represented by the expression as given in the specification, adding 1.0-10.0 mol/L precipitating agent, and 2. 0-10 mol/L complexing agent to the mixed salt of nickel-manganese-cobalt solution, and adding the solution with flow metering pump of the reaction vessel, adding primer liquid such as deionized water, adjusting the mixed salt solution, the precipitate flow rate and a complexing agent, the complexing agent to control the content of the autoclave to 3.0-15.0 g/L, pH value of the reaction solution to 8-12.5, controlling the temperature inside the reactor to 30-65 degrees C, discharging reaction mass continuously from the top of the overflow, transferring reaction mass to a filter press, washing with hot water at 40-60 degrees C to wash liquid with a pH below 8.0, drying at 80-150 degrees C for 6-15 hours, sifted through a 300 mesh sieve to obtain a spherical powder particles having an average particle size of 3-20 mu m. Ternary lithium ion battery anode material is prepared by mixing lithium salt and ternary positive electrode material precursor at molar ratio of 1.02-1.12, stirring ball mill or high speed mixing, at atmosphere of air or pure oxygen, at 400-800 degrees C for 2-10 hours, heating and sintering at 650-1000 degrees C for 6-24 hours, cooling, sifting through 300 mesh screen, an average particle diameter of 3-20 mu m, to obtain spherical ternary anode material (LiNixMnyCozO2), where x is 0 30-0.90, y is 0 05-0 80, z is 0 05-0 50, x + y + z is 1, followed by mixing graphene or graphene oxide with a dispersing agent, a solvent mixed ultrasonic dispersion or mechanically stirring, forming graphene or graphene oxide dispersion, adding above prepared anode material to the dispersion, milling or high-speed mixing evenly, drying in vacuum under nitrogen, argon or argon-hydrogen mixed gas protection, heating at 300-900 degrees C for 0.2-10 hours, cooling and sifting through 300 mesh screen to obtain finished product.