Exploring the Synergistic Effects of Ni-MOF@PANI/GO Ternary Nanocomposite for High-Performance Supercapacitor Electrodes
摘要
Benzene 1,3,5-tricarboxylic acid metal-organic frameworks (BTC MOFs), a class of exceptional porous materials with multifunctional capabilities and capable nanogeometries, have recently drawn considerable attention from researchers as potential materials for supercapacitor electrodes. This study introduces a novel Ni-MOF/PANI/GO ternary nanocomposite synthesized via a cost-effective chemical oxidative polymerization method. Graphene oxide (GO) was synthesized using a modified Hummers’ method. A nickel Metal organic framework (Ni-MOFs) was synthesized by a Hydrothermal Method and Polyaniline (PANI) was synthesized by a chemical oxidative polymerization method to study the effect of GO and PANI on the electrochemical properties of Ni-MOF. The structural characterization and morphology of the developed materials were determined by powder X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, UV-Vis spectroscopy, and PL spectroscopy. The grown structure of the ternary nanocomposite with an average crystallite size of 13.767 nm was confirmed by XRD analysis. The different bonds and transmittance peaks were analyzed using FTIR. The D and G bands were analyzed using Raman spectroscopy. An optical band gap (Eg) ~ 4.02 eV was confirmed by UV-Vis and PL spectra. Electrochemical characterization was performed using CV, GCD and EIS analysis in 3 M KOH solution. CV revealed that ternary composite showed maximum specific capacitance of 206 Fg−1 at 1 mVs−1 in 3 M KOH with charge retention of ca. 81.5% after 5000 charge-discharge cycles. This study aimed to synthesize a novel Ni-MOF/PANI/GO ternary nanocomposite and evaluate its electrochemical properties in supercapacitor applications.
Graphical Abstract