Molybdenum diselenide/reduced graphene oxide based hybrid nanosheets for supercapacitor applications

Abstract

In the present study, molybdenum diselenide/reduced graphene oxide (MoSe₂/rGO) nanosheets were synthesized via a facile hydrothermal process and the electrochemical performance of the nanosheets was evaluated for supercapacitor applications. The MoSe₂ nanosheets were uniformly distributed on the surface of the rGO matrix. The MoSe₂/rGO nanosheet electrode exhibited an enhanced specific capacitance (211 F g⁻¹) with excellent cycling stability, compared with pristine MoSe₂. The enhanced electrochemical performance of the MoSe₂/rGO nanosheet electrode is mainly attributed to the improved electron and ion transfer mechanism involving the synergistic effects of pseudocapacitance (from the MoSe₂ nanosheets) and the electric double layer charge (EDLC, from the rGO nanosheets) storage behavior. These results demonstrate that the enhanced electrochemical performance of MoSe₂/rGO nanosheets could be obtained via a facile and scalable approach.