Facilely synthesized Fe2O3-graphene nanocomposite as novel electrode materials for supercapacitors with high performance

► The Fe2O3-graphene nanocomposite was obtained by friendly method with urea in one step. ► The addition of Fe2O3 composites has positive effect on the electrical performance of the graphene nanosheets. ► The specific capacitance of the Fe2O3-graphene electrode was 226 F/g at a discharge current density of 1 A g−1.