Synthesis and Characterization of Nickel Metal-Organic Framework for Supercapacitor Electrodes

Abstract

 A supercapacitor is a device of energy storage that boasts high energy and power density, utilizing an electrostatic double-layer mechanism and pseudocapacitance reactions to store energy. Electrode materials, like nickel, have
garnered attention because of their high theoretical capacitance, availability, simplicity in production or synthesis, and chemical durability. In spite of these benefits, obstacles like poor rate capability and limited cycling properties hinder
its widespread application. Nickel Metal-Organic Framework (Ni-MOF) was produced through solvothermal synthesis at 150°C and applied as a supercapacitor electrode. MOF-based material is chosen as a supercapacitor electrode because of
its oustanding surface area, numerous mesopores, abundant active sites, and good electrical conductivity, all contributing to improving the supercapacitor's specific capacitance. Ni-MOF was synthesized and analyzed using multiple analytical
methods, like X-ray diffraction (XRD), scanning electron microscope (SEM), and Brunauer-Emmett-Teller (BET) study to verify the material's structure and morphology. The Ni-MOF based supercapacitor’s electrochemical performance
was evaluated using cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD). The test findings demonstrate the great potential of this material for highpower energy storage applications by demonstrating that the supercapacitor with Ni-MOF electrodes has a specific capacitance of 90.7 F g-1 at a current density of 0.5 A g-1 .