▎ 摘　　要

NOVELTY - Producing manganese oxide-reduced graphene oxide composite, comprises (i) forming manganese dioxide-graphene oxide composite and (ii) heat-treating the formed manganese dioxide-graphene oxide composite. The manganese oxide-reduced graphene oxide composite comprising manganese oxides of different phases is formed according to the temperature at which the heat treatment is performed. USE - The method is useful for producing manganese oxide-reduced graphene oxide composite (claimed) in lithium secondary batteries, supercapacitors and sensors. ADVANTAGE - The manganese oxide-reduced graphene oxide composite has high charge/discharge capacity and electric conduction property.