Multilayer-Cake WS2 /C Nanocomposite as a High-Performance Anode Material for Lithium-Ion Batteries: 'Regular' and 'Alternate'

A multi-layer-cake WS2/C nanocomposite was successfully synthesized via an intercalation-transformation method, in which few-layered WS2 and carbon were sandwiched in an alternating sequence. As a benefit of the electronic conductivity enhanced by the interlayer carbon and the unique "regular" and "alternate" architecture, the WS2/C nanocomposite showed promising performance as anode material for lithium-ion batteries. The nanocomposite demonstrated a high capacity of 829.4 mAhg-1 at 0.3 Ag-1 after 140 cycles and it could still deliver a stable capacity of about 326.8 mAhg-1 at a current density of 8.0 Ag-1.