Written by AZoMJan 18 2021 Researchers from Tomsk Polytechnic University (TPU) together with collaborators from the University of Lille (Lille, France) have synthesized a new material with reduced graphene oxide (rGO) for energy storage devices and supercapacitors. Modified rGO supercapacitor electrodes. Image Credit: Tomsk Polytechnic University. The rGO modification technique that involves the use of organic molecules, derivatives of hypervalent iodine, enabled acquiring a material that is capable of storing 1.7 times more electrical energy. The study results were published in the academic journal Electrochimica Acta. A supercapacitor is an electrochemical device used for storing and discharging electric charge. In contrast to batteries, supercapacitors store and discharge energy multiple times faster and do not include lithium.