▎ 摘　　要

NOVELTY - Preparation of graphene/manganese oxide composite material involves mixing manganese salt, glycerin, graphene oxide, isopropanol, and water, stirring for 0.4-0.6 hours to obtain mixed solution (A), heating mixed solution to 170-190 degrees C at rate of 2-4 degrees C/minute, and heated at constant temperature for 5-7 hours, obtaining product (B) after cooling to room temperature, washing product (B) centrifugally, and freeze-drying to obtain graphene/manganese oxide composite material. USE - Preparation of graphene/manganese oxide composite material in lithium ion battery (claimed). ADVANTAGE - The preparation method is economical, simple, more efficient, does not require high temperature sintering and total time required for experiment is relatively short.