Facile synthesis of hierarchical hollow MoS2 nanotubes as anode materials for high-performance lithium-ion batteries†
Abstract
Hierarchical hollow MoS2 nanotubes were successfully synthesized using Na2MoO4·2H2O, MnCl2·4H2O and (NH4)2CS through a simple solvothermal reaction. The formation of hierarchical hollow MoS2 nanotubes was based on the intermediate MnMoO4, which was used as a self-sacrificed template. The hollow MoS2 nanotubes exhibited improved reversibility and cycling performance compared with the solid MoS2 when evaluated as anode materials for lithium-ion batteries. A high capacity of 727 mA h g−1 could be retained after 100 cycles at a current density of 100 mA g−1. The rate capability of the hollow MoS2 nanotubes also improved. The hierarchical hollow MoS2 nanotubes could still be maintained at 480 mA h g−1 at a current density of 1000 mA g−1. The enhanced lithium-ion storage performance of the hierarchical hollow MoS2 nanotubes in terms of reversible capacity, cycling performance, and rate capability can be attributed to their hierarchical surface and hollow tube structure.