Facile fabrication of binary metal chalcogenides (MS@NS) for supercapacitors applications via hydrothermal route

This work conducts an experimental comparison of various binary transition metal selenides (BTMSe's) to discover promising materials for supercapacitor (SCs) electrodes. Researchers are currently investigating the potential of selenide-based materials and their nanostructures in the realm of energy storage devices. Although, there is limited research examining the practicality of employing BTMSe's as electrode materials. Herein, selenide-based materials such as MnSe, NbSe2 and their nanocomposite MnSe@NbSe2 were synthesized via the hydrothermal technique. Supercapacitors (SCs) with exceptional characteristics were observed, notably outstanding cycling stability exceeding 6000th cycle, specific energy (58.72 Wh kg(-1)), specific power (281 Wh kg(-1)), and specific capacitance (C-sp) of 2079 F g(-1) at 1 A g(-1), as indicated by thorough analysis. There is a significant consensus in material synthesis methods and a plethora of new insights into the charge-storage process in emerging capacitive electrodes for future storage devices.