In situ formation of Ni(OH)2 nanoparticle on nitrogen-doped reduced graphene oxide nanosheet for high-performance supercapacitor electrode material

A nitrogen-doped reduced graphene oxide/Ni(OH)2 (N-rGO/Ni(OH)2) composite is prepared by in situ formation of Ni(OH)2 nanoparticle on the surface of N-rGO nanosheet under easy one-step hydrothermal condition. With the improved electrochemical activity upon nitrogen doping and positive synergetic effect between N-rGO and Ni(OH)2, the obtained composite exhibits high capacitance, excellent rate capability, good cycle life, etc.