Synthesis and Li-Ion Storage Properties of Hierarchical C-Coated MoS₂ Nanobelts

The thin films, comprising hierarchical C-coated MoS₂ (C@MoS₂@C) nanobelts, were synthesized by continuous hydrothermal-decomposition with reactants of Mo-powder, H₂O₂ (30%), malic acid and thiourea. The microstructures and Li-ion storage behavior of the C@MoS₂@C nanobelts were investigated with X-ray diffraction, scanning electron microscopy, transmission electron microscopy and cyclic voltammetry. The results show that the C@MoS₂@C nanobelts with good Li-ion storage capacity can be synthesized by hydrothermal-decomposition. For example, when cycled for 100 times at 0. 2 A/g and 1. 0 A/g, the specific capacity of the rate-capacity of the C@MoS₂@C nanobelts was 1025. 5 and 820 m Ahg-1, respectively. The C-coated MoS₂ nanobelts can be synthesized by hydrothermal-decomposition decomposition of the C-coated MoO₃-precursor; while keeping the nano-structures intact, the Ccoating is capable of promoting MoS₂ nano-sheets formation on the surface of C-template, significantly increasing the MoS₂-conductivity. The as-synthesized C@MoS₂@C films possess high conductivity and structural stability.