Ternary metal oxide with carbon composite as high-performance electrode materials for supercapacitor applications
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Date
2023
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UMT, Lahore
Abstract
In this study, three samples of MOF-derived ternary iron-nickel–cobalt ZIF-67 composite (FeNiCo ZIF-67) is synthesized via co-precipitation method with the variation in molar concentration of FeO, NiO and CoO. Electrode fabrication has been carried out for these three samples. Ternary metal oxides ZIF 67 have gained attention for supercapacitor electrode material due to high surface area, porosity, chemical stability, tunable properties, redox activity and ecofriendly material. The porous polyhedral structure of FeNiCo ZIF-67 with different compositions consisting of interconnected nanoparticles is found to play an important role in increasing the charge storage capacity of the material. Considered crucial to a robust and sustainable energy future, their importance spans economics, ecology, and society. Several characterizations, including X-ray diffraction, Energy dispersive X ray, Transmission electron microscopy and Raman are used to characterize the morphology, structure, and composition of these materials, and electrochemical methods, such as cyclic voltammetry (CV), galvanostatic charge and discharge (GCD), and electrochemical impedance spectroscopy (EIS), are also used to evaluate the electrode performance. The FeNiCo ZIF-67 (1:2:1) electrode material exhibits an outstanding specific capacitance of 532.7 F/g at a current density of 1 A/g, as compared to the other materials FeNiCo ZIF-67 (1:1:1) and FeNiCo ZIF-67 (2:1:1) These investigations provide an easy and efficient method to develop nanocomposites FeNiCo ZIF-67 (1:2:1) with better electrochemical characteristics, as electrode materials for supercapacitor applications.