Suresh Gyan Vihar University International Journal of Environment, Science and Technology Volume 6, Issue 1, 2020, pp. 24-30 GRAPHENE OXIDE DISPERSED POLYSTYRENE NANOCOMPOSITES FOR EMBEEDED CAPACITOR APPLICATIONS Nisha Shrivastava 1,2 , Gaurav Kumar Sharma 1 , Tarun Patodia 2 , Balram Tripathi 2 1 Department of Physics, Suresh GyanVihar University, Jaipur 2 Department of physics, S S Jain Subodh pG (Autonomous) College, Jaipur E-mail: balramtripathi1181@gmail.com, nishasaxena2411@rediffmail.com ABSTRACT Graphene-based materials are promising for applications in super capacitors and other energy storage devices due to the intriguing properties, i.e., highly tunable surface area, outstanding electrical conductivity, good chemical stability and excellent mechanical behavior. This paper summarizes recent developments of graphene oxide-based materials for supercapacitor electrodes, based on their macro structural complexity, i.e., zero-dimensional (0D) (e.g. free-standing graphene oxide), one-dimensional (1D) (e.g. fiber-type and yarn-type structures), two dimensional (2D) (e.g. graphenes and graphene-based nanocomposite films), and three- dimensional (3D) (e.g. graphene foam and hydrogel based nanocomposites). There are extensive and on-going researches on the rationalization of their structures at varying scales and dimensions, development of effective and low cost synthesis techniques, design and architect ring of graphene-based materials, as well as clarification of their electrochemical performance. KEYWORDS: Electrodes, graphene, macro, techniques INTRODUCTION Graphene oxide is an oxidized form of graphene, laced with oxygen-containing groups. It is considered easy to process since it is dispersible in water (and other solvents) and it can even be used to make graphene. Graphene oxide is not a good conductor, but processes exist to augment its properties [1] . Graphene oxide is synthesized using Hummer’s method. Many variations of these methods exist, with improvements constantly being explored to achieve better results and cheaper processes. The effectiveness of an oxidation process is often evaluated by the carbon/oxygen ratios of the graphene oxide. Composite electrodes integrate two or more materials together as active charge storage materials. Most popular approach is to fabricate composites between carbon based materials with pseudo capacitive. Graphene oxide is considered as one of the most promising material for the next generation flexible thin film super capacitors due to its unique structural and property features, i.e. i) the two- dimensional structure can provide a large surface area, which serves as an extensive transport platform for electrolytes ii) the high conductivity enables a low diffusion resistance, therefore leading to enhanced power and energy density; and iii) the superior mechanical property makes free-standing films with robust mechanical stability [2] . Among the carbon based 2D materials graphene oxide has attracted much attention due to tunable thickness, structural flexibility, lightweight and electrical properties, which are the essential qualities required for flexible super capacitors. Considerable research efforts have been therefore dedicated to exploring novel processing methods for graphene oxide based , including spin-coating Langmuir Blodgett, layer-by- layer deposition, interfacial self-assembly, and vacuum filtration [3,4] . Polymers are substances containing a large number of structural units joined by the same type of linkage. These substances often form into a chain- like structure. Polymers already have a range of applications that far exceeds that of any other class of material available to man. Current applications extend from adhesives, coatings, foams, and packaging materials to textile and industrial fibers, composites, electronic devices, biomedical devices, optical devices, and precursors for many newly developed high-tech ceramics. Polystyrene(PS)Schematic: Density: 1.05 g/cm Melting point: 240°C (464°F)Chemical formula: (C8H8)n