Synthesis and physico-chemical characterization of WO3-TiO2 type composite materials for efficient electrochromic applications

Abstract

In the present study ceramic mixed metal oxide such as WO3 (tungsten trioxide) deposited Titania (TiO2) in the form of composite was synthesized by sol-gel and hydrothermal method. The electrochromic application and physico chemical characteristic were demonstrated by powder X-ray diffraction (XRD), Raman and Ft-IR Spectroscopy method. The various weight percentage of tungsten trioxide deposited TiO2 matrix have been studied for electrochromic applications. WO3-Titania shows good activity and cycle performance up to 30 minutes was stable long standing at various potential applied on EC (Electrochromic device) device. The Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM) reveals the morphology of square and circular particles formation for the prepared WO3 and WO3/TiO2 nanoparticle. The EC device performance of the materials depends on the suitable composition of WT-1 with WO3 on FTO plate and WT-2, WT-3 etc., depend on various factor the coloration as well as bleaching process obtained. The WO3/TiO2 (WT-1) in FTO plate on Electrochromic device shows long standing cycle stability and coloring and discoloration process.