▎ 摘　　要

NOVELTY - A graphene modified lithium manganate positive material preparing method involves mixing lithium source, manganese source with doped additive M to carry out sintering process to obtain doped powder, mixing the powder with graphite and grinding to obtain modified powder, dispersing the powder in aluminum nitrate and ammonium hydroxide solution to carry out heat treatment to obtain mixed material, stirring the material with polyvinylidene fluoride, electric conduction agent and N-methyl pyrrolidone solution to obtain mixed slurry, followed by drying the slurry to obtain finished product. USE - Method for preparing graphene modified lithium manganate positive material that is utilized for carbon nanotube. ADVANTAGE - The method enables preparing graphene modified lithium manganate positive material that is utilized for carbon nanotube with high stability and circulation performance. DETAILED DESCRIPTION - A graphene modified lithium manganate positive material preparing method involves mixing lithium source, manganese source with doped additive M to carry out quadratic sintering process at 750 degrees C to obtain doped powder, mixing the doped powder with graphine and grinding to obtain modified graphene-lithium-manganese (LiMxMn(2-x)O4) powder, dispersing the powder in aluminum nitrate and adding ammonium hydroxide solution to carry out heat treatment at 500 degrees C to form precursor powder, subjecting the precursor powder to secondary heat treatment to obtain mixed material, stirring the material with polyvinylidene fluoride adhesive, electric conduction agent and N-methyl pyrrolidone solution to ratio of 0.015:0.90-0.95:0.02-0.003:0.065-0.005 to obtain mixed slurry, followed by drying the slurry at 80 degrees C to obtain finished product, where x is 0-1.