▎ 摘　　要

MoS2/graphene composites were synthesized using L-cysteine and sodium molybdate as the sources of sulfur and molybdenum, and L-cysteine was found to be beneficial for two-dimensional layered structure formation. Polyvinylpyrrolidone (PVP)-assisted hydrothermal synthesis gave petal-shaped MoS2/reduction of graphene oxide (RGO) composite electrode materials (PVP-MoS2/RGO). X-ray diffraction and transmission electron microscopy confirmed that MoS2 changed to a less ordered layer structure from the multilayer stacking structure after moderate addition of PVP. Scanning electron microscopy showed that the moderate PVP-assisted MoS2/RGO material had a petal-shaped nnicrosphere morphology with good dispersion. The ordered stacking structure with less layers and good dispersion of the composite materials shorten the embedded in/out path of lithium ions in MoS2, which obviously improved their capacity, cycle stability, and rate performance as lithium ion battery anode materials.