WO3/WS2 composite materials for gas sensor and energy storage applications

Abstract

Transition metal binary compounds, especially oxides and chalcogenides, are material of choice for many applications. Particularly, tungsten trioxide (WO3) has been extensively studied due to its outstanding electrochromic and photochromic properties in the visible and infrared region, high coloration efficiency and relatively low price [1], which makes it suitable for the construction of smart windows, mirrors, optical shutters and display devices [2]. Tungsten trioxide is also a good photocatalyst, gas sensor, chemical sensor and biosensor, material [3]. On the other hand, tungsten disulfide (WS2) with its unique properties is a promising material for a number of applications such as solid lubricants, catalysts, photosensitive films, electronic and optical devices [2]. Both the materials and their nanocomposites are of great interest for energy storage applications.