PREPARATION OF TERNARY NANOCOMPOSITE OF (RGO+PANI+PB) FOR HIGH-PERFORMANCE SUPERCAPACITOR ELECTRODE.

Nano-composite materials of reducing graphene oxide (RGO), polyaniline (Pani), and Prussian blue (PB) were prepared. RGO was prepared by the hammer oxidation method followed by reduction with olive leaf extract (OLE). Pani was prepared by chemical oxidation with ammonium persulfate (APS). PB was prepared by mixing two equal volumes of the same concentration of Fe(NO3)3 and K4Fe(CN)6. These three materials were ground with black activated carbon as filler and wetted with a binder to produce a slurry. A surgical blade was used to coat the GC substrate with the slurry and allowed to stand for two days. A comparative study of single, binary, and ternary components was performed. Fourier-transform-infrared (FTIR) spectroscopy was used to characterize the ternary composite and the SEM pattern was used to study the morphology of the nanomaterials. The electrochemical tests were performed using cyclic voltammetry and demonstrated high specific capacitance, high reversibility, and excellent stability, up to 98.2% of the initial value after 1000 cycles. Charge/discharge time which also demonstrates high-rate capability and high specific capacity, up to 850 F/g at 0.1 A/g was investigated. Finally, the resistance of the electrode/electrolyte interface based on the measurements obtained using electrochemical impedance spectroscopy was considered. Achieved Made a prototype of a supercapacitor with a hybrid solid-state gel electrolyte using a Cu–Al foil folding current collector, which was tested using a rotating little fan. [ABSTRACT FROM AUTHOR]