Dual coexisting interconnected grapheme nanostructures for high performance supercapacitor applications
A facile and scalable high-temperature molten salt method was used to synthesize a high-quality hierarchical carbon nanostructure consisting of graphene nanosheets and nanoscrolls with an inter-connected network and high electrical conductivity. During the process, the intercalation of lithium and hydrogen from molten LiCl into graphite led to the formation of a coexisting graphene sheet– scroll nanostructure. An electrode using the fabricated interconnected carbon nanostructure showed a highly reversible specific capacitance of 213 F g1 at 1 A g1 initial specific capacitance (1 A g1(97.9% after 10 000 cycles). Such remarkable electrochemical performance is desirable for supercapacitor/ultracapacitor applications., excellent capacitance retention (84.5% of the) at 50 A g1), and good cyclability. (97.9% after 10 000 cycles). Such remarkable electrochemical performance is desirable for supercapacitor/ultracapacitor applications.