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Fabrication of MoS2 nanosheet@TiO2 nanotube hybrid nanostructures for lithium storage
Xin Xu1, Zhaoyang Fan, Shujiang Ding
1State Key Laboratory for Mechanical Behavior of Materials and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Department of Applied Chemistry, School of Science, Xi'an Jiaotong University, Xi'an 710049, China. dingsj@mail.xjtu.edu.cn; dmyu@mail.xjtu.edu.cn.
Abstract:
MoS2 nanosheet@TiO2 nanotube hybrid nanostructures were successfully prepared by a facile two-step method: prefabrication of porous TiO2 nanotubes based on a sol-gel method template against polymeric nanotubes, and then assembly of MoS2 nanoclusters that consist of ultrathin nanosheets through a solvothermal process. These hybrid nanostructures were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray (EDX) spectroscopy, X-ray diffraction (XRD) and Brunauer-Emmett-Teller (BET) analysis. When evaluated as an electrode material for lithium ion batteries, the results of the electrochemical test show that the unique MoS2 nanosheet@TiO2 nanotube hybrid nanostructures exhibit outstanding lithium storage performances with high specific capacity and excellent rate capability. The smart architecture of the MoS2 nanosheet@TiO2 nanotube hybrid nanostructures makes a prominent contribution to the excellent electrochemical performance.
