The fabrication methodologies and material characterizations of Zeolitic Imidazolate Framework-8 (ZIF-8)-derived zinc oxide (ZnO) nanoparticles for supercapacitor electrodes are discussed in the current work. Several research projects have been done to create ZIF-8 materials, with the goal of outperforming direct ZnO nanoparticle production. The chapter digs into the characteristics of materials created in diverse ways and analyses the effect of different precursors on particle shape. These processes span from solvothermal to sono-chemical and frequently include the utilization of a variety of precursor materials and ligands. In addition, morphological and structural characterizations of the materials were carried out to assess the capabilities and potential of the produced materials. The importance of the morphological changes and the transition of ZIF-8 into ZnO is emphasized in this chapter. Additionally, the electrochemical characterization of these materials is investigated using a variety of tests such as cyclic voltammetry (CV) and galvanostatic charge–discharge analysis (GCD). The CV study demonstrates the materials’ reversibility, which is critical for supercapacitor electrode performance. A smaller difference between the oxidation and reduction peaks indicates more reversibility and a greater number of charge–discharge cycles. The GCD study evaluates the supercapacitor electrodes’ energy storage and power transmission capacities.