SYNTHESIS AND SPECTRAL CHARACTERIZATION OF HIGH-PERFORMANCE SUPERCAPACITOR ZIF-67@rGO NANOCOMPOSITE ELECTRODE MATERIALS

Abstract

Over the past two decades, graphite (GO) and reduced graphene oxide (rGO) two-dimensional materials have been found to be very valuable applied materials. Graphene acts as an electron transfer agent and performs well as an electrode material in supercapacitors. However, mass production of graphene remains a major challenge. According to this research paper, naturally occurring graphite from the earth is refined and re-extracted. Hummer's method was used to prepare graphene oxide from well-purified flake graphite with the addition of both H 2 SO 4 as a guest and KMnO 4 as an oxidizing agent. Recently, ZIF-67@rGO nanocomposites have been widely used due to their high surface area, uniform porosity, and relatively high thermal and chemical stability.When comparing graphite and graphene oxide, graphene oxide spacing distance is much more than graphite. It is well known that graphene oxide contains a large number of oxygen-containing functional groups due to graphite oxidation. Another common feature of rGO is that fold-like structures are observed on both the surface and edges of rGO. Also,ZIF-67@rGO nanocomposite was prepared by mixing equal amounts of crystalline ZIF-67 and very fine rGO powder using a simple hydrothermal and stirring method. Such instruments FT-IR, XRD, UV, and SEM have been used to characterize the consequences of these factors on the structure and attribute of GO, rGO, and ZIF-67@rGO. In general, looking at the results and properties of rGO/ZIF-67 air gel, it is confirmed that this nanocomposite material is an alternative composition for use as an electrode material for electrodes in symmetric supercapacitor storage devices.