Molybdenum chalcogenides for supercapacitor applications : a critical review

The growing energy demands of daily life necessitate innovative solutions. Green approaches, which are universally accepted, advocate the use of renewable energy sources in conversion and storage systems. Research in nanomaterials has continually advanced, with the structures and shapes of these materials diversifying for a broad spectrum of applications. Supercapacitor-based systems are emerging as leading alternatives in contemporary trends among the various energy storage devices. In particular, transition metal dichalcogenides (TMDCs) are surfacing as novel supercapacitive electrode materials, thanks to ongoing research efforts. This review focuses on the technological development, characteristics, and properties of various transition metal chalcogenides used for supercapacitors. Mainly, molybdenum chalcogenides have been observed to be an emerging member of the TMDCs family that recently gained considerable attention for supercapacitor applications. This study briefly describes different synthesis methods and their parameters for molybdenum chalcogenide nanomaterials. The electrochemical properties like electrochemical impedance spectroscopy (EIS), specific capacitance (SC), cycling stability, energy density, and the power density of molybdenum chalcogenide-based supercapacitors have been discussed thoroughly with appropriate literature support.