Solvothermal Synthesis of Nickel-Based Metal-Organic Frameworks for Supercapacitor Application

Abstract

In the field of energy storage and conversion, metal-organic frameworks (MOFs), have garnered a lot of attention because of their special  qualities, which include their large surface area, regulated morphology, and adjustable pore size structures. MOFs with the  combined properties of electric doublelayer capacitance and pseudo capacitance have been investigated as supercapacitor electrode  materials. It has been observed that the kind of coordinating ligand employed during synthesis has a major impact on both the textural  and surface characteristics of MOF. In this study, we reported a synthesis of nickelbased metal-organic frameworks (Ni-MOF) by a simple  solvothermal method. The microscopic studies revealed that the as-synthesized material exhibits a rod-like morphology with a high  crystallinity as confirmed by microstructural and powdered X-ray diffraction analysis respectively. The electrochemical studies revealed  that the as-prepared electrode materials exhibit a specific capacitance of 814.6 F g^-1 at a current density of 6 A g^-1 in a 1 M KOH aqueous  electrolyte.