▎ 摘　　要

The alpha-Ni(OH)(2) nanowires (alpha-Ni(OH)(2) NWs) and nanoparticles (alpha-Ni(OH)(2) NPs) were grown on reduced graphene oxide (RGO) sheets by adjusting the reduction degree of the substrates. The alpha-Ni(OH)(2) NWs/RGO composite was achieved by using graphene oxide (GO) as the substrate. In contrast, the alpha-Ni(OH)(2) NPs/RGO composite was obtained when RGO was applied as the support. The difference in morphology can be attributed to the fact that the hydrophilic function of GO is larger than that of RGO, and sp(2) carbon atom concentration in alpha-Ni(OH)(2) NPs/RGO is higher than that in alpha-Ni(OH)(2) NWs/RGO. When alpha-Ni(OH)(2) NWs/RGO and alpha-Ni(OH)(2) NPs/RGO composites were used as electrode materials for supercapacitors, the alpha-Ni(OH)(2) NPs/RGO exhibits superior electrochemical performance than alpha-Ni(OH)(2) NWs/RGO, which is attributed to the fact that the specific surface area, conductivity, and sp(2) carbon atom concentration of alpha-Ni(OH)(2) NPs/RGO are larger than those of alpha-Ni(OH)(2) NWs/RGO. The alpha-Ni(OH)(2) NPs/RGO composite is a promising candidate as electrode material for high performance supercapacitor.