Nano dimensional transition metal dichalcogenide polymer nanocomposites synthesis and their potential applications

Abstract

With the increasing energy demands, the field of energy storage devices is being well explored by employing organic energy storage devices [1 4]. Electrical double-layer capacitors (EDLC) are a class of super capacitive devices which stores and delivers energy by nano-level charge separation at the electrochemical interface[5 10]. In EDLCs, the charges are stored on account of surface adsorption of the ions from the electrolyte as a consequence of the electrostatic attraction, thus forming two charged layers (double layer). Electrode materials are therefore instrumental for supercapacitors in achieving high performance. For EDLC electrodes, the main requirements are high surface area, fast charge/ discharge rates, and high conductivity. In most cases, EDLCs are constructed using carbon-based electrode materials like porous carbon, carbon nanotubes and graphene as they possess high surface area, non-toxicity and controllable porosity[5,11]. Specific capacitance can be enhanced by optimizing the electrical conductivity and the chemical stability of the electrode material. Conducting polymeric materials are used for fabrication of supercapacitor electrodes as they have been reported to offer high specific capacitance than obtained for carbon-based electrodes[5].While designing the nanocomposite electrode materials, the attempt is to utilize the outstanding features that every single material has to offer in order to obtain an enhanced performance from these materials . Some of the advantages of using MoS2 (a promising alternative to graphene)-conducting polymer nanocomposites are enhanced electrical conductivity, improved electrochemical redox properties, increased voltage window, simplistic synthesis process and reduced volume expansion... newline