▎ 摘　　要

Nickel molybdate (NiMoO4) nanowires were prepared by hydrothermal method on chemical-vapor-deposition-grown three-dimensional graphene skeletons. The X-ray diffraction and Raman results show NiMoO4 nanowires are alpha phase. This binder-free and ultralight graphene/NiMoO composite was used as a positive electrode for supercapacitors. This electrode presents a high specific capacitance of 1194 F g(-1) at 12 mA cm(-2) and good stability with a cycling efficiency of 87.3% after 2000 cycles. Further, the deduced energy density reaches 41 Wh kg(-1) at a steady power density of 1319W kg(-1). These results demonstrate the potential application of the designed composite for future flexible and lightweight energy storage devices. (C) 2015 Elsevier B.V. All rights reserved.