▎ 摘　　要

NOVELTY - Manufacturing spherical lithium titanate-graphene composite material comprises adding lithium carbonate and titanium dioxide into poly carboxylic acid ammine salt solution to obtain mixed slurry, ball-milling the mixed slurry with zirconium ball as ball-milling ball, rotating at a speed of 400-1500 revolutions per minute, stirring the mixed slurry in an electric stirrer, adding graphite solid powder, spray drying the slurry, sieving to obtain powder, stirring, spray drying, sintering the powder, and cooling to room temperature. USE - The spherical lithium titanate-graphene composite material is useful in lithium ion battery (claimed). ADVANTAGE - The method: comprises graphene composite structure, which has high conductivity; and increases battery performance of the composite material as cathode. DETAILED DESCRIPTION - Manufacturing spherical lithium titanate-graphene composite material comprises (a) adding lithium carbonate and titanium dioxide into 2-5 wt.% poly carboxylic acid ammine salt solution in a mass ratio of 1:1.5:4 to obtain mixed slurry, where the mol ratio of lithium and titanium is 0.8-0.87:1, (b) ball-milling the mixed slurry for 4-8 hours, using zirconium ball as ball-milling ball of 3-6 mm, ball mill at a rotating speed of 400-1500 revolutions per minute, (c) stirring the mixed slurry in an electric stirrer, stirring for 1-6 hours at a speed of 50-400 revolutions per minute, adding 3-8% graphite solid powder, (d) spray drying the slurry, sieving via 200-300 meshes sieve to obtain powder, stirring at 30-50 revolutions per minute, spray drying at an inlet temperature of 200-300 degrees C and outlet temperature of 80-150 degrees C and (e) sintering the powder at a high temperature under protective atmosphere at 500-900 degrees C for 3-12 hours, cooling to room temperature.