Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 41, Pages 22927-22934Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b06002
Keywords
carbon; composites; Li-ion batteries; molybdenum disulfide; nanospheres
Funding
- National Natural Science Foundation of China (NSFC) [21203133, 21301124, 21473120, 51272168]
- Natural Science Foundation of Jiangsu Province [BK2012186]
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Hierarchical structured carbon@MoS2 (C@MoS2) microspheres and nanospheres composed of carbon-sandwiched monolayered MoS2 building blocks are synthesized through a facile one-pot polyvinylpyrrolidone (PVP) micelle-assisted hydrothermal route. The dimension and carbon content of C@MoS2 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@MoS2 nanospheres present considerably higher capacity, better rate behavior and cycling stability than C@MoS2 microspheres. The reasons are attributed to the unique interconnected nanospherical morphology and the internal hierarchical construction of C@MoS2 nanospheres with expanded MoS2/carbon interlayer spacing.
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