An improved energy storage performance of Mo doped WSe2@rGO electrode for asymmetric supercapacitor device application

This present study reported the synthesis of Mo (1.0, 3.0, 5.0 %) doped WSe₂@rGO using the solvothermal method. The synthesized materials are characterized using different experimental techniques. The specific capacity (SC) of 3.0 % Mo doped WSe₂@rGO electrode turns out to be 908.4 Cg^-1 (1514 Fg^-1) under a current density of 1.0 Ag⁻¹. A relatively better surface area of 3.0 % Mo doped WSe₂@rGO causes the enhancement of its SC compared to WSe₂@rGO electrode. An asymmetric supercapacitor device (M3//AC) is fabricated using 3.0 % Mo doped WSe₂@rGO as a positive electrode and activated carbon (AC) as a negative electrode. The fabricated ASC device reveals an energy density of 70 Whkg⁻¹ for a power density of 1706 Wkg^-1. A green-coloured light-emitting diode (LED) is light-up for 13 min using a M3//AC device.