Simultaneous Functionalization and Reduction of Graphene Oxide by Ethylenediamine for application in Supercapcitors

Ethylene di-amine (EDA) acts as a surface modification as well as reducing agent. It becomes covalently attached to the surface of GO by means of nucleophilic substitution reaction. In this work, a series of experiments were performed in which GO was treated with different concentrations of ethylene di-amine (EDA) to study the simultaneous functionalization and reduction of GO by EDA. The morphology, composition, and surface functionalization of EDA-GO were studied using Scanning Electron Microscopy (SEM), X-Ray Diffraction, Fourier Transform Infrared Spectroscopy (FTIR), and Raman and UV-Vis Spectroscopies. It was observed that EDA does not completely eliminate the oxygen functionalities from the surface of GO. Hence, all EDA-GOs were also reduced to EDA-rGO at a constant temperature (200°C) under an inert atmosphere of argon (Ar) gas. The photo response behavior of the EDA-rGO-based optical sensor was studied under different wavelengths of source illumination (635 and 1064nm). The GO treated with 100 ml of EDA delivered an enhanced photo response characteristic in comparison to the other samples prepared with different concentrations of EDA. Generating energy in a shorter time and storing it for longer periods is a crucial part of energy science. Storage systems play a major role in storing energy to dissipate it for longer periods of time. Supercapacitors and solid-state batteries are the two most used sources for storing energy in chemical form through electrochemical reaction, where supercapacitors store high-density energy quickly and dissipate it at the same rate, whereas solid-state batteries store energy for a longer duration and dissipate it slower than the supercapacitors depending upon the mechanics and material used in the cathode and anode.