Vertically aligned graphitic carbon nanosheet arrays fabricated from graphene oxides for supercapacitors and Li–O2 batteries

Abstract

Vertically aligned graphitic carbon nanosheet arrays were fabricated from graphene oxide solution by a hydrothermal method. The arrays exhibited a specific capacitance of 240 F g⁻¹ at 200 A g⁻¹ as a supercapacitor electrode and a capacity of 6500 mA h g⁻¹ as a Li–O₂ battery cathode.