Emerging advances of 2D molybdenum disulfide (MoS2) and their composites towards high-performance supercapacitors: A comprehensive review

Abstract

Due to the widespread usage of energy consumption, there is an increasing need for energy at a global scale. Supercapacitors have been a better choice lately because of their high-power density, rapid charging and discharging, and prolonged cycle life. Several electrode materials have been studied thus far to enhance the performance of the supercapacitor. In recent times, transition metal dichalcogenides (TMDCs) have gained popularity as active electrode material for supercapacitors owing to their interesting structure, better stability, larger surface area, more active sites, and high electrical conductivity. Among various TMDCs, MoS₂ has gained interest as an electrode material due to its amazing characteristics such as being rich in active sites, honeycomb structure, increased ionic and electronic conductivity, and increased surface area. The current article mainly focuses on various synthesis methods for Molybdenum disulfide (MoS₂). Furthermore, pure MoS₂ and its composite with carbon-based material, conducting polymer-based materials, metal oxides, carbides, and nitrides have been utilized to improve the performance of supercapacitors discussed. In the last section, future perspectives and challenges are discussed.