One-pot hydrothermal synthesis of MoSe_2 nanosheets spheres-reduced graphene oxide composites and application for high-performance supercapacitor

摘要

MoSe2 nanosheets spheres (MoSe2boldNSs/bold) were synthesized directly on the surface of reduced graphene oxide (rGO) nanosheets (MoSe2-rGO) using a simple one-pot hydrothermal approach, which was used for supercapacitor. The synergistic effect of the MoSe(2)NSs and the highly conductive rGO network endows the MoSe2-rGO composite excellent electrochemical performance. The effect of the content of graphene in the composite were investigated in details. The optimal electrode exhibits a high specific capacitance of 814.4Fg(-1) at 1A g(-1) in 2M KOH. Moreover, the assembled supercapacitor delivers a high specific capacitance of 215.7Fg(-1) at 1Ag(-1) and retains 81.7% of the initial capacitance at 10Ag(-1) after 5000 cycles. It suggests that it has potential as an electrode material for high-performance electrochemical supercapacitors.