Facile synthesis of core–shell nanostructured hollow carbon nanospheres@nickel cobalt double hydroxides as high-performance electrode materials for supercapacitors

Abstract

Novel core–shell nanostructured hollow carbon nanospheres@nickel cobalt double hydroxides (HCNs@NiCo-LDH) were fabricated by a facile hydrothermal method, exhibiting a high specific capacitance (2558 F g⁻¹ at 1 A g⁻¹) and outstanding rate capability.