Tungsten Oxide Nanostructures for Energy Storage and Field Emission Applications

Abstract

Single crystalline tungsten oxide (WO 3 ) nanorods were synthesized over flexible carbon fabric via simple hydrothermal method and used directly as supercapacitor (SC) electrode. WO 3 nanorods with their peculiar structural features over the fabric exhibited excellent electrochemical performance with a high specific capacitance of 481.34 F/g at scan speed 10 mV s -1 . Additionally, these nanorods showed propitious as electron field emitters where the registered turn on field and estimated field enhancement values were 3.6 V/µm and 4550 respectively. These results indicate that present unique WO 3 nanorods arrays over flexible carbon cloth substrate are a promising candidate for constructing high-performance solid state electronics and electrochromic devices.