Three-dimensionally layers nanosheets of MoS2 with enhanced electrochemical performance using as free-standing anodes of lithium ion batteries

Three-dimensionally (3D) layers nanosheets of MoS 2 (3DLN-MoS 2 ) were successfully prepared by the lithium intercalation-exfoliation of n -butylithium to bulk MoS 2 . It is the first time to use 3DLN-MoS 2 film prepared by electrostatic spray deposition (ESD) directly as the anode materials for rechargeable lithium-ion batteries without any conductive additive and binder. By the analyses of X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), it’s found that MoS 2 were exfoliated and stacked together to form a 3D structure. Compared to that of commercial MoS 2 , this special three-dimensional structure results in high rate transportation of electrolyte ion and electrons throughout the electrode matrix. After ten cycles at 0.1 and 1000 cycles at 2 A/g, the discharging capacity was 1204.5 and 569.1 mAh g −1 , achieving an excellent rate capacity and a good cycling stability.