MoS2-TiC-C Nanocomposites as New Anode Materials for High-Performance Lithium-Ion Batteries

Abstract

The MoS2-TiC-C nanocomposite was prepared by high-energy ball milling (HEBM) for application as a new anode material for lithium-ion batteries. Pure molybdenum disulfide (MoS2), Ti, and carbon black (C) were used as the starting materials for the synthesis process. Various analyses including X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM) revealed that the nanosized MoS2 active materials were uniformly dispersed in a TiC-C matrix formed via the HEBM process. We investigated the cyclic performance, rate capability, and electrochemical impedance spectra using the as-prepared composite as an anode material. The results showed that the electrochemical performances of the MoS2-based nanocomposite were significantly improved compared to those of MoS2-C and MoS2 due to the presence of the TiC-C matrix in MoS2. Furthermore, we determined the optimal milling time based on the cyclic performances of the materials.