Fabrication of FeMoWO2/rGO Electrode Materials for High Energy and Power Density for Electrochemical Applications

Abstract

As increasingly a need to have better, trustworthy and environment-friendly energy storage systems, scholars are working on the development of superiorly advanced electrode materials that can make available both the high energy density and power density. The piece of work involves the synthesis of a novel nanocomposite material comprising reduced graphene oxide (rGO) in combination with iron (Fe), molybdenum (Mo), and tungsten (W) oxides. The FeMoWO 2 /rGO composite has the advantage of both the high redox activity of metal oxides and good conductivity and a high surface area of rGO. They combine to form a material favourable to rapid charge transfer and large storage capacity. A simple hydrothermal process was applied to the chemistry of composite synthesis and coupled with heat treatment aided in ensuring a uniform and stable structure. SEM, XRD all those characterization methods proved to define the quality and good formation of the material. The testing done electrochemically revealed that the FeMoWO2/rGO electrode had a high specific capacitance of 632 F/g at the current density of 1 A/g and energy density of 45.3 Wh/kg. It also exhibited a high stability having 92 percent of its performance retained after 5000 charge- discharge cycles. These findings indicate that FeMoWO2 /rGO composite can be an effective material that is to be employed in high performance supercapacitors and other energy storage devices.