MoS₂-Decorated Ti₃C₂MXene Nanosheet as Anode Material in Lithium-Ion Batteries

MXene, which is a new kind of two-dimensional transition metal carbide or carbonitride, has a wide range of applications in supercapacitors, lithium-ion batteries, and lithium-sulfur batteries. MXene is prepared by acid etching a MAX phase, and then nanocomposites of MoS 2 decorated on Ti 3 C 2 MXene (MoS 2 @Ti 3 C 2 ) are synthesized using a simple solid state sintering method. The electrochemical properties of the MoS 2 @Ti 3 C 2 nanocomposites were investigated to assess the use of these nanocomposites as anode materials for lithium-ion batteries. The MoS 2 @Ti 3 C 2 nanocomposites have a reversible discharge capacity of 131.6 mAh g −1 at a current density of 1000 mA g −1 for 200 cycles, significantly higher than that of pure Ti 3 C 2 and MoS 2 , which is 58 mAh g −1 and 3.6 mAh g −1 . The MoS 2 @Ti 3 C 2 nanocomposites exhibit excellent cycling stability. The better electrochemical performance is attributed to the MoS 2 nanoparticles grown on the layer of MXene, which shortens the charge transfer distance and improves the charge transfer rate during the electrochemical reaction.