MoS2–C/graphite, an electric energy storage device using Na+-based organic electrolytes

Molybdenum disulfide–carbon composite (MoS2–C) sample has been prepared by a hydrothermal method using Na2MoO4, CH4N2S and glucose as starting materials and then calcined at 800 °C in an N2/H2 mixed atmosphere. X-ray diffraction and N2 adsorption–desorption tests have been employed to characterize its crystal and pore structure. SEM, TEM and TG methods have been used to investigate its morphology and the weight ratio of carbon. The MoS2–C can be used as the negative electrode for electric energy storage devices using Na+-based organic electrolytes. The charge storage mechanism at the MoS2–C negative electrode has been investigated. Electric energy storage devices using MoS2–C/graphite have been constructed and their electrochemical performance has been studied.