▎ 摘　　要

NOVELTY - A graphene-based carbon composite lithium ion battery cathode material is prepared by taking 2-5 g graphene oxide and 300-600 g alcohol, sealing, ultrasonicating for 0.5-2 hours to obtain suspension, sand milling for 5-10 minutes to obtain graphene oxide alcohol dispersion, taking 100-300 mL graphene oxide alcohol dispersion, adding 50-100 g lithium ion battery cathode material (I), heating and stirring, obtaining viscous mixture, drying to obtain precursor, and calcining under an air atmosphere at 200-400 degrees C for 0.5-2 hours. USE - Method for preparing graphene-based carbon composite lithium ion battery cathode material. ADVANTAGE - The product has improved cycle stability performance and increased discharge specific capacity. DETAILED DESCRIPTION - A graphene-based carbon composite lithium ion battery cathode material is prepared by taking 2-5 g graphene oxide and 300-600 g alcohol, sealing, ultrasonicating for 0.5-2 hours to obtain suspension, sand milling for 5-10 minutes to obtain graphene oxide alcohol dispersion, taking 100-300 mL graphene oxide alcohol dispersion, adding 50-100 g lithium ion battery cathode material of formula (Li1.2Mn0.48Ni0.24Co0.08O2) (I), heating and stirring, obtaining viscous mixture, drying to obtain precursor, and calcining under an air atmosphere at 200-400 degrees C for 0.5-2 hours.