Abstract

Abstract Metal-organic frameworks have accomplished significant consideration in energy stroage devices (ESDs) owing to their adjustable pore structure and substantial specific surface area. Herein, NiCo-MOF was synthesized using the hydrothermal method at a temperature of 150 °C, and WSe2 was synthesized using the tip sonication method. The WSe2/NiCo-MOFs electrode showed an outstanding specific capacity (Cs) of 1053.65 C/g. The WSe2/NiCo-MOFs//AC asymmetric device revealed a remarkable Cs of 270.5 C/g. The device acquired a power density (Pd) of 1791.4 W kg-1 and an energy density (Ed) of 38.8 Wh /kg, demonstrating its exceptional performance. Furthermore, WSe2/NiCo-MOF//AC retained 86.7% capacity retention after 5,000 cycles in the durability test. Metal ion sensors find utility in environmental assessments, medical diagnostics, and industrial procedures. Strontium ion is an essential alkaline earth metal, constituting approximately 0.02 to 0.03% of the Earth's crust. These nanoparticle-based chemosensor have the potential to be highly accurate and precise detection of metal ions, which is a promising incentive for their advancement. The WSe2/NiCo-MOF photoelectrode demonstrated exceptional photoactivity, quick reaction and recovery times, and good photo-switching performance. Saturation was attained, and fluorescence spectra were taken at specific periods for three different molar concentrations of strontium ions (10 M, 20 M, and 50 M). The multifunctional WSe2/NiCo-MOF nanocomposite electrode material can be used to design hybrid energy harvesting devices.