Novel Mesoporous Carbon-Carbonaceous Materials Nanostructures Decorated with MnO2 Nanosheets for Supercapacitors

Herein, we fabricated a range of flexible nanocomposite electrodes by combining mesoporous carbon (MC) with graphene nanosheets (GNS), carbon nanotubes (CNT) and carbon spheres (CS) respectively, followed by the decoration of MnO2 nanosheets using a developed etching method approach. Results after a series of electrochemical measurements demonstrated that as-synthesized nanostructures realized the larger specific capacitance of 326 F g(-1) and an increase specific capacitance was found after 1000 cycles interestingly. Indeed, these findings will capacitate low-cost nanocomposite carbon materials fascinating for long cycling and electrochemically stable supercapacitors.