Role of Nafion in the Electrochemical Characteristics of Zinc Antimonate Nanoparticles for Supercapacitor Application

Abstract

Zinc antimonate (ZnSb2O6) nanoparticles were prepared by an inexpensive chemical precipitation method and its structural properties were studied using X-ray diffraction (XRD). Further in electrochemical analysis, Nafion, a per-fluorinated sulfonic acid polymer solution that serves as a binder, wherein the hydrophilic sulfonic acid group provides proton-exchange between electrolyte and active electrode material thereby, it is beneficial in the improvement of the capacitance, chemical and mechanical stability of a material. Considering this key point, the significance of the nafion on the electrochemical characteristics of zinc antimonate nanoparticles were studied through cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) analysis in 1 M H2SO4 electrolyte. The significant changes in the capacitance, electrochemical behavior and electrochemical stability of the nanostructure with and without the binder were investigated.