Facile construction of MoS2/graphene aerogel composite by depositing MoS2 film with a magnetron sputtering method for high-performance supercapacitors

Molybdenum disulfide (MoS 2 ) film has been successfully deposited within a three-dimensional (3D) graphene aerogel (GA) by a magnetron sputtering method to facilely construct MoS 2 /GA composite as a high-performance electrode material of supercapacitor . Through cyclic voltammetry , constant current charge/discharge and electrochemical impedance spectroscopy tests of three-electrode supercapacitor, the electrochemical performance of the MoS 2 /GA composite was evaluated, demonstrating specific capacitances of 187.3 and 175.0 F g −1 at 0.5 and 1 A g −1 , respectively. When cycles 1000 times under the condition of 2 A g −1 , the capacitance retention remains 93.5%. The excellent electrochemical properties of MoS 2 /GA were attributed to the effective structural integration of MoS 2 film and graphene sheets achieved with the magnetron sputtering process, which can further develop other GA-based composites as a feasible technique. The as-prepared MoS 2 /GA with outstanding performance in this work has a promising prospect in supercapacitor application.