Facile fabrication of Mn doped WSe2 as an electrode material for supercapacitor application

The world is currently confronted with major challenges of energy scarcity and environmental deterioration. Prioritising the development and storage of eco-friendly energy sources is imperative given the finite availability of non-renewable resources. Under these circumstances, the production and utilization of environmentally friendly energy have become widely recognized as of utmost significance. Lately, researchers have shown a strong fascination with supercapacitors owing to exceptional energy/power density and prolonged cycle life. In this work, we have fabricated Mn doped WSe2 through the hydrothermal route for supercapacitor applications. Utilization of Mn2+ as a dopant increases the conductivity of the WSe2 lattice by adding charge carriers, hence enhancing electron mobility. The incorporation of Mn2+ enhanced the electrochemical characteristics of Mn-doped WSe2, resulting in an overall improvement in electrochemical efficacy. The Mn doped WSe2 exhibited Cs of 1908 F/g at 1 A/g, surpassing the Cs of pure WSe2 (593 F/g). This enhancement was attributed to the rise in the quantity of active sites, lower resistance and improved morphology resulting from to successful doping of Mn2+. It enhances the material's conductivity and charge storage capacity, compelling to increase in capacitance. After 5000th cycle at 10 mV/s, the material showed great cyclic stability due to doping. The superior performance of Mn doped WSe2 electrode suggests its potential for supercapacitor electrodes. The widespread implementation of Mn doped WSe2 can considerably enhance the performance, durability, and cost-effectiveness for it to be utilized further in next-generation energy storage processes.