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Abstract
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The aim of this study was to prepare a CuO/ZnO/GC3N4 nanocomposite derived from Cu-Zn-H2BDC as a highperformance supercapacitor electrode material. Metal-organic frameworks (MOFs) were selected for their favorable pore size and high specific surface area. H2BDC, an economical organic ligand, was chosen, and the in-situ
synthesis of CuO/ZnO/GC3N4 nanocomposites was achieved using copper chloride and zinc nitrate as the metal
salts, in conjunction with GC3N4. Material characterization techniques, including XRD, FTIR, FE-SEM, and EDX,
were employed to assess the structure and purity of the synthesized material, confirming its successful synthesis.
Electrochemical tests were conducted to evaluate the effectiveness of the synthesized materials as supercapacitor
electrodes. These tests encompassed cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS) in an alkaline electrolyte (6 M KOH). The electrochemical tests were
performed on Cu-Zn-H2BDC, CuO/ZnO, and CuO/ZnO/GC3N4 nanocomposite electrodes in a 6 M KOH environment. Notably, the CuO/ZnO/GC3N4 nanocomposite electrode exhibited the highest specific capacity at a density of 0.5 A/g, reaching 2571 F/g. These results demonstrate the superior charge-discharge capabilities and capacity of the synthesized CuO/ZnO/GC3N4 nanocomposite, confirming the study's success.
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