文摘
Hierarchical structured carbon@MoS<sub>2sub> (C@MoS<sub>2sub>) microspheres and nanospheres composed of carbon-sandwiched monolayered MoS<sub>2sub> building blocks are synthesized through a facile one-pot polyvinylpyrrolidone (PVP) micelle-assisted hydrothermal route. The dimension and carbon content of C@MoS<sub>2sub> spheres are effectively controlled by singly adjusting the concentration of PVP, which plays the dual functions of soft-template and carbon source. As the anode materials of Li-ion batteries, C@MoS<sub>2sub> nanospheres present considerably higher capacity, better rate behavior and cycling stability than C@MoS<sub>2sub> microspheres. The reasons are attributed to the unique interconnected nanospherical morphology and the internal hierarchical construction of C@MoS<sub>2sub> nanospheres with expanded MoS<sub>2sub>/carbon interlayer spacing.