The Ultrafast and Eco-friendly Reduction of Graphene Oxide Using a UV–IR Assisted Intense Pulsed Light and Its Application as Supercapacitor

In this work, a UV–IR assisted intense pulsed light (IPL) process was used for the reduction of graphene oxide (GO). It was found that the reduction efficiency of GO was enhanced compared to those of other reduction methods such as only intense pulsed light irradiation or other chemical method. An optimal condition for the reduction of GO was investigated by varying conditions and combinations of the UV–IR assisted IPL. The graphene films reduced by the UV–IR assisted IPL were characterized by X-ray photoelectron spectroscopy, Raman spectroscopy and transmission electron microscopy. As a result, we found the optimum condition of the UV–IR assisted IPL process for the reduction of GO without any damage to the GO sheet. Also, the reduced GO based electrode was fabricated with nickel foam for the electrical double layer capacitor and its performance was tested using three electrode electrochemical method.