Enhanced electrochemical performance of (MoSe2@NiSe2) (0D/1D) hybrid nanostructures for supercapacitors

Improving and reducing the cost of electrochemical performance is critical to developing energy storage technology. In this study, we investigated the effects of incorporating NiSe2 into the MoSe2, then the electrochemical behaviour of MoSe2@NiSe2 (0D/1D) hybrid-nanostructure prepared using a hydrothermal method. The Scanning electron microscopy (SEM) images confirmed that MoSe2, MoSe2@NiSe2 (0D/1D) hybrid-nanostructure in composites with surface enhancement. The MoSe2@NiSe2 (0D/1D) hybrid-nanostructure exhibits enhanced specific capacitance of 802 F g- 1 compared to MoSe2 and shows extended cycle life up to 5000 cycles with 92.7 % of capacity retention. In addition, the active electrode consisting of MoSe2@NiSe2 (0D/1D) hybridnanostructure exhibits high ionic affinity due to the presence of abundant electrochemically active sites, which can reduce the internal resistance and lead to accelerated ion transport. Our results demonstrate that a simple and scalable approach can significantly improve the electrochemical performance of the MoSe2@NiSe2 (0D/1D) hybrid nanostructure.