Synthesis of hierarchical MoS2 microspheres composed of nanosheets assembled via facile hydrothermal method as anode material for lithium-ion batteries

摘要

A hierarchical MoS2 architecture composedof nanosheet-assembled microspheres with anexpanded interplanar spacing of the (002) planes wassuccessfully prepared via a simple hydrothermalreaction. Electron microscopy studies revealed formationof the MoS2 microspheres with an averagediameter of 230 nm. It was shown that the hierarchicalstructure of MoS2 microspheres possesses both themerits of nanometer-sized building blocks andmicrometer-sized assemblies, which offer high surfacearea for fast kinetics and buffers the volumeexpansion during lithium insertion/deinsertion,respectively. The micrometer-sized assemblies werefound to contribute to the enhanced electrochemicalstabilities of the electrode materials....