Abstract:
A hierarchical MoS2 architecture composed
of nanosheet-assembled microspheres with an
expanded interplanar spacing of the (002) planes was
successfully prepared via a simple hydrothermal
reaction. Electron microscopy studies revealed formation
of the MoS2 microspheres with an average
diameter of 230 nm. It was shown that the hierarchical
structure of MoS2 microspheres possesses both the
merits of nanometer-sized building blocks and
micrometer-sized assemblies, which offer high surface
area for fast kinetics and buffers the volume
expansion during lithium insertion/deinsertion,
respectively. The micrometer-sized assemblies were
found to contribute to the enhanced electrochemical
stabilities of the electrode materials....