▎ 摘　　要

NOVELTY - A modified graphene-doped lithium manganate material comprises 30-40 pts. wt. modified graphene, 28-44 pts. wt. lithium manganate, 12-18 pts. wt. lithium acetate, 8-10 pts. wt. acrylonitrile, 4-6 pts. wt. nitropyridine and 2-6 pts. wt. glycine. The modified graphene is prepared by carrying out graphene oxidation treatment, reacting with dimethyl sulfoxide and dextran for every 5 minutes, reacting with laurate, melamine, polyvinyl alcohol and glycerolamine, and vacuum-suction-drying. USE - Modified graphene-doped lithium manganate material used for lithium ion battery. ADVANTAGE - The modified graphene-doped lithium manganate material ensures excellent cycle performance of lithium ion battery and ensures safety. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation method of modified graphene doped lithium manganate material, which involves adding modified graphene, lithium manganate and lithium acetate, stirring, adding concentrated sulfuric acid under nitrogen protection, stirring at 10-20 degrees C for 30-60 minutes, obtaining semi-finished products, semi-finished products, mixing acrylonitrile, nitropyridine and glycine, stirring at the 320 rpm for 30 minutes, centrifugally-washing, and vacuum freeze-drying at 4 degrees C.