▎ 摘　　要

A novel hybrid of Cu2MoS4 nanoparticles embedded on reduced graphene oxide (rGO) sheets was prepared via a one-pot hydrothermal method without any surfactants or templates. The electrochemical properties of the as-prepared Cu2MoS4-rGO electrode were investigated as an advanced electrode for supercapacitor applications, and it exhibited higher specific capacitance (231.51 F g(-1) at 5 mV s(-1)) compared to the pristine Cu2MoS4 electrode (135.78 F g(-1) at 5 mV s(-1)). The Cu2MoS4-rGO electrode showed energy density of 31.92 Wh kg(-1) at a constant current of 1.5 mA, which was higher than that of the pristine Cu2MoS4 electrode (17.91 Wh kg(-1) at a constant current of 1.5 mA). The satisfactory enhancement in the electrochemical performance of Cu2MoS4-rGO electrodes could be attributed to the chemical interaction between rGO sheets and Cu2MoS4 nanoparticles, which produced more active sites for the charging/discharging process and enabled fast electron transport through the graphene layers. Furthermore, this work presented an extensive study about the effect of temperature (from 25 degrees C to 80 degrees C) on the Cu2MoS4-rGO electrode in an aqueous Na2SO4 electrolyte. The effect of temperature on the electrochemical properties of the Cu2MoS4-rGO electrode was investigated using cyclic voltammetry (CV), charge-discharge (CD) tests and electrochemical impedance spectroscopy (EIS). The electrochemical performance of the Cu2MoS4-rGO electrode exhibited similar to 128% improvement at 80 degrees C compared to that at 25 degrees C in CD profiles. These experimental results indicate a fundamental comprehension of the temperature-dependent supercapacitor electrodes for industrial, military and space applications.