▎ 摘　　要

NOVELTY - Quaternary anode material modified by wet doping and carbon coating comprises lithium (Li)-Ni (nickel)a-cobalt (Co)b-manganese (Mn)c-aluminum (Al)d-cerium (Ce)e-molybdenum (Mo)f-oxygen (O2) doped carbon (C), where a is 0.5-1, b is 0-0.3, c is 0-0.30, d is 0-0.1, e is 0-0.1, f is 0-0.01, and a+b+c+d=1. USE - Quaternary anode material modified by wet doping and carbon coating used for lithium ion battery which is useful as a power source for electric automobile to reduce greenhouse gas emission. ADVANTAGE - The quaternary anode material modified by wet doping and carbon coating has low production cost, high energy density, stable structure, good electrochemical performance of wet doping and carbon-coated co-modified, high discharge capacity of lithium ion battery assembled and good circulation stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing quaternary cathode material co-modified by wet doping and carbon coating, which involves: a. adding nickel sulfate hexahydrate, cobalt sulfate heptahydrate, manganese sulfate monohydrate and aluminum sulfate to deionized water and stirring well to obtain mixed solution; b. adding Ce salt solution, Mo salt solution, complexing agent ammonia hydride solution, and precipitating agent sodium hydroxide solution to mixed solution, stirring constantly, carrying out co-precipitation reaction, and obtaining wet doping modified quaternary cathode material precursor slurry; c. subjecting wet doped modified quaternary cathode material precursor slurry to solid-liquid separation, collecting solid, washing, drying, sieving, demagnetizing solid, and obtaining wet doping to modify quaternary cathode material precursor; d. mixing precursor of quaternary cathode material with lithium salt, uniformly ball milling, and calcinating to obtain wet-doped modified quaternary cathode material LiNiaCobMncAldCeeMofO2; e. dispersing wet-doped modified quaternary cathode material LiNiaCobMncAldCeeMofO2 and carbon source in absolute ethanol, continuously stirring, drying solvent, calcining, and obtaining quaternary cathode material LiNiaCobMncAldCeeMofO2 doped C which is co-modified by wet doping and carbon coating.