Processing and manufacturing of graphene-based microsupercapacitors

Portable electronic devices and electric vehicles have greatly stimulated the development of micro-sized energy storage devices. Electrochemical capacitors, which have the abilities of rapid charge and discharge, high energy storage and outstanding cyclic stability, can bridge the gap between batteries and conventional electrolytic capacitors. Graphene, an emerging two-dimensional (2D) material, is an excellent choice to fabricate electrodes. With the abovementioned abilities, graphene-based microsupercapacitors (graphene-based MSCs) are promising future energy storage devices to promote the practical application of portable electronics and microelectronic devices. This review aims to summarize the latest developments in graphene-based MSCs and the methods of processing miniature graphene electrodes to provide higher performance. In addition, we are also committed to critically analyzing the status of graphene-based MSCs and, on this basis, forecasting their future challenges, perspectives and opportunities.