▎ 摘　　要

NOVELTY - A iron oxide/graphene composite material preparing method involves dispersing graphene oxide in water under ultrasonic treatment to obtain uniform and transparent graphene oxide colloid solution. The graphene oxide colloid solution is mixed with ferric hydroxide colloid solution or saturated ferric chloride solution under ultrasonic treatment for 20 minutes-2 hours to obtain mixed solution. The mixed solution is reacted in a hydrothermal kettle at 170-190 degrees C for 10-13 hours, cooled, washed and dried to obtain iron oxide/graphene composite material. USE - Method for preparing iron oxide/graphene composite material that is utilized as super capacitor electrode material. ADVANTAGE - The method enables preparing the iron oxide/graphene composite material with uniform dispersion of iron oxide and graphene and better electrochemical performance in a simple and environment-friendly manner.