▎ 摘　　要

A method of electrodeposition under supergravity field is proposed to prepare Ni(OH)(2)/Ni/graphene composites. Particles composed of Ni(OH)2 and Ni are covered by a thin graphene coating. The Ni(OH)(2)/ Ni/graphene composite is evaluated as electrodes for supercapacitors, which shows that the specific capacitance of Ni(OH)(2)/Ni/graphene is 2609 F g(-1) at a current density of 0.5 A g(-1) in 6 M KOH solution. In addition, it could still reach 1020 F g(-1) at a current density of 4 A g(-1). On the other hand, electrodeposition under supergravity field could decrease concentration polarization and promote ion diffusion, which is a promising strategy for the fabrication of nanocomposites. (c) 2014 Elsevier B.V. All rights reserved.