In situ synthesis of graphene/single-walled carbon nanotube hybrid material by arc-discharge and its application in supercapacitors

Aiming to the synthesis of graphene/single-walled carbon nanotube (SWNT) hybrid materials, an arcing-discharge method for an efficient and large-scale production has been developed. Furthermore, the performance of supercapacitors using this graphene/SWNT hybrid has been studied, which gives a remarkable result with the specific capacitance of similar to 350 F/g at 2.7 V and an energy density of similar to 68 Wh/kg in the standard industry organic electrolyte system. (C) 2012 Elsevier Ltd. All rights reserved.