▎ 摘　　要

In order to improve the capacitive performance of supercapacitors, NiMoO4 electrode materials were success-fully prepared by a simple and low cost hydrothermal route, and the morphology, microstructure and proper-ties of the materials were successfully optimized by adding reduced graphene oxide (rGO). Electrochemical and sophisticated physical property tests are used to examine the qualities of items. As a supercapacitor electrode material, the NiMoO4/rGO composite performed admirably. The specific capacitance reached 2056 Fg-1 at a current density of 2 Ag-1, which is greater than standard NiMoO4 at the same current density (788 Fg-1). After 1000 charge/discharge cycles, NiMoO4/rGO retains 91.1 % of its initial capacitance. NiMoO4/rGO composites can be used in asymmetric supercapacitors, and the asymmetric supercapacitor device offers a high power den-sity (60. 2 Whkg-1) and energy density (750.5 Whkg-1) when used as the positive electrode and activated car-bon as the negative electrode. A combination of mesoporous-NiMoO4 nanoparticles with a high specific surface area and good interaction with conductive rGO is responsible for the improved electrochemical performance of NiMoO4/rGO.