Enhancing the electrochemical properties of zinc antimonate nanorods by anchoring silver nanoparticles as hybrid electrode material for supercapacitors

摘要

In this work, Ag NPs anchored ZnSb_2O_6 nanostructured electrode materials have been prepared by facile ultrasonication assisted chemical reduction approach. While evaluating as a supercapacitor electrode material, it exhibits pseudocapacitance behavior with fast faradaic reactions with the maximum specific capacitance of 119.71 F/g at a charge/discharge current density of 1.0 A/g with 98% initial capacitance retained after 2000 cycles. The superior pseudocapacitive properties of Ag anchored ZnSb_2O_6 nanostructures are attributed to its unique structure, large surface area to volume for easy access of electrolyte ions and the Ag anchored on ZnSb_2O_6 nanorods has improved the electrical conductivity of the whole nanostructured electrode and also provided rapid electron transfer kinetics for better electrochemical reactions. The results confirmed that the Ag/ZnSb_2O_6 hybrid nanostructure can be a potential and active electrochemical energy storage material in supercapacitors.