a-MoO₃ nanorods coated with SnS₂ nano sheets core-shell composite as high-performance anode materials of lithium ion batteries

Novel a-MoO₃nanorods coated with SnS₂ nanosheets core-shell nanorod composite has been synthesized via two hydrothermal routes. More importantly, as the anode materials for lithium ion batteries, the MoO₃@SnS₂ core-shell nanorod composite has not been investigated in detail. The one-dimensional core-shell nanorod composite has high surface area, which could offer larger contact area for material and electrolyte. In addition, there are large enough inner spaces between the SnS₂nanosheets, which provides an efficient transport of electrons and ions. In addition, the core-shell nanostructure could accommodate the volume changes caused by the charge/discharge reaction and could avoid the agglomerations and pulverization of anode materials.As anode materials for LIBs, the as-prepared MoO₃@SnS₂ core-shell nanorod composite displayed 1663.2mAh/g discharge capacity in the first cycle at the current of 60mA/g. After 100 cycles, the remained capacity is 568.2mAh/g, which is both higher than that of a-MoO₃and SnS₂. Considering the excellent electrochemical performance with high capacity and good cycling stability, the as-prepared the MoO₃@SnS₂ core-shell nanorod composite has the potential to be the next generation anode materials for lithium ion batteries.