▎ 摘　　要

NOVELTY - A graphene load manganese dioxide electrode material preparing method involves mixing natural graphite powder with improved hummer system graphite oxide to obtain oxide solution, and adding potassium permanganate solution to graphene oxide solution. Two suspensions are provided in a pressure kettle after ultrasonic dispersion. The suspension is cooled at room temperature after hydro-thermal reaction. The suspension is centrifuged repeatedly with deionized water for washing process. A graphene load manganese dioxide electrode material is obtained after vacuum drying. USE - Method for preparing graphene load manganese dioxide electrode material. ADVANTAGE - The method enables providing environment-friendly and simple process and obtaining composite material with better super-capacitor performance and high capacity.