Synthesis and characterization of pyrite nanoparticles and its supercapacitor properties study in different electrolytes on the glass carbon electrode substrate

In this study, pyrite nanoparticles (FeS2) were prepared using a new method. The nanoparticles were characterized using Fourier transform infrared spectroscopy, X-ray diffraction spectroscopy and scanning electron microscopy. Electronic microscope images showed an approximate particle size of about 20 nm. The nanoparticles were coated on a glass-carbon electrode as substrate and the electrochemical capacitive behavior of the electrode was investigated by cyclic voltammetry at different scan rates and different electrolytes including KOH 6M, H2SO4 1M, NaOH 3M, Na2SO4 1M. Experimental results and surface calculations below the voltammetry curves showed that the electrode in H2SO4 1M electrolyte with a specific capacity of 17.18 farads per gram has the best supercapacitor performance.