Synthesis of core-shell TiO2@MoS2 composites for lithium-ion battery anodes

Core-shell composites of TiO 2 nanospheres equipped with MoS 2 nanosheets (TiO 2 @MoS 2 ) were synthesized in the presence of cetyltrimethylammonium bromide through a facile hydrothermal method , which was followed by annealing process in an atmosphere of 2% H 2 balanced by Ar. The TiO 2 @MoS 2 composites exhibited higher electrochemical performance than pure MoS 2 nanosheets, and showed a reversible capacity of 467 mAh g −1  at 100 mA g −1 after 80 cycles with highly stable capacity retention. This good performance may be attributed to the dispersed MoS 2 layer, which accelerates the surface electrochemical reactions and offers a stable structure, and the TiO 2 sphere, which serves as a stabilizer to retain the MoS 2 structure upon prolonged cycling. The core-shell composites can be a promising candidate for use in lithium-ion batteries.