Redox processes in graphene oxide for storing and converting energy

Abstract

In this paper for the first time, a comparison was made of the electrochemical activity of graphene oxides synthesized by modified Hummer's, Brodie and electrochemical methods in aprotic media. Electrodes based on these GOs exhibit electrochemical activity in an aprotic solvent of propylene carbonate with 0.1 M (C4H9)4NClO4 electrolytes in the potential range from -3 to 1 V rel. Ag+/Ag in 0.01M AgNO3 0.1M (C4H9)4NClO4 in acetonitrile. These redox processes are irreversible. Despite the fact that the types of oxygen groups in GO synthesized by different methods are the same, the ratio of these groups is different. The specific capacity of electrodes based on GO during redox processes in aprotic media correlates with the C:O ratio determined from elemental analysis. The use of new active electrode materials based on graphene in electrochemical processes will allow the creation of electrochemical energy storage devices with a higher energy density and capacity.