Carbon nanomaterials for high-performance supercapacitors

Owing to their high energy density and power density, supercapacitors exhibit great potential as high-performance energy sources for advanced technologies. Recently, carbon nanomaterials (especially, carbon nanotubes and graphene) have been widely investigated as effective electrodes in supercapacitors due to their high specific surface area, excellent electrical and mechanical properties. This article summarizes the recent progresses on the development of high-performance supercapacitors based on carbon nanomaterials and provides various rational concepts for materials engineering to improve the device performance for a large variety of potential applications, ranging from consumer electronics through wearable optoelectronics to hybrid electric vehicles.