Study of carbon-MoS2 composite materials used as negative electrode in electrochemical capacitor
TThe intercalation pseudocapacitance for slightly expanded layer structure of molybdenum disulfide (MoS2) in non-aqueous electrolyte contains NaI, KI or KBr were study. In order to fully utilize the redox-additives, an asymmetric capacitor is the one of solutions, where Faradaic processes exist simultaneously on both electrode. At the negative electrode (carbon-chalcogen composite), the pseudocapacitance originates from the extremely fast kinetics due to the enhanced ionic and electronic transport enabled between layers and the metallic 1T-phase during the intercalations process. An additional pseudocapacitance comes from iodine/iodide redox reactions on positive electrode (activated carbon). In this work, the redox-intercalation pseudocapacitance was presented as a new solution in a high energy density electrochemical capacitors.