Cost Effective Synthesis of Metal Oxide/ Sulfides for Enhanced Supercapacitor Application

Abstract

I report the cost effective use of metal oxides/sulphides for enhanced aqueous based supercapacitor application. The supercapacitive property of the metal oxides and sulfides are generally depends on the conductivity and the surface area. Conductivity is important because it helps the faster electron transfer into the electrode. As the supercapacitor property depends on the available active sites, and so surface area is equally important for enhancement of the capacitive storage property. Higher the surface area, higher will be the atomic active site for the faster reaction. NiCo2O4 (NCO) is a promising ternary oxide with very high conductivity compared with their corresponding binary oxides. Here we report the synthesis of 1D NCO nanowires as well as high surface area 2D nanosheets and checked the capacitive performance in aqueous KOH electrolyte. Further I have grown Nickel cobalt sulfide nanosheet which possesses higher conductivity than even NCO and checked its performance in same solution.