Nano Research

, Volume 12, Issue 11, pp 2908–2917 | Cite as

Carbon confinement synthesis of interlayer-expanded and sulfur-enriched MoS2+x nanocoating on hollow carbon spheres for advanced Li-S batteries

  • Wenda Li
  • Dezhu Wang
  • Zihao Song
  • Zhijiang Gong
  • Xiaosong Guo
  • Jing Liu
  • Zhonghua ZhangEmail author
  • Guicun LiEmail author
Research Article


High energy density and low-cost lithium-sulfur batteries have been considered as one of the most promising candidates for next-generation energy storage systems. However, the intrinsic problems of the sulfur cathode severely restrict their further practical application. Here, a unique double-shell architecture composed of hollow carbon spheres@interlayer-expanded and sulfur-enriched MoS2+x nanocoating composite has been developed as an efficient sulfur host. A uniform precursor coating derived from heteropolyanions-induced polymerization of pyrrole leads to space confinement effect during the in-situ sulfurization process, which generates the interlayer-expanded and sulfur-enriched MoS2+x nanosheets on amorphous carbon hollow spheres. This new sulfur host possesses multifarious merits including sufficient voids for loading sulfur active materials, high electronic conductivity, and fast lithium-ion diffusive pathways. In addition, additional active edge sites of MoS2+x accompanied by the nitrogen-doped carbon species endow the sulfur host with immobilizing and catalyzing effects on the soluble polysulfide species, dramatically accelerating their conversion kinetics and re-utilization. The detailed defect-induced interface catalytic reaction mechanism is firstly proposed. As expected, the delicately-designed sulfur host exhibits an outstanding initial discharge capacity of 1,249 mAh·g−1 at 0.2 C and a desirable rate performance (593 mAh·g−1 at 5.0 C), implying its great prospects in achieving superior electrochemical performances for advanced lithium sulfur batteries.


Few-layered MoS2+x double-shell architecture sulfur enriched MoS2+x nanocoating lithium-sulfur batteries 


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The work was financially supported by the National Natural Science Foundation of China (Nos. 51672146 and 21805157) and the Natural Science Foundation of Shandong Province (No. ZR2018BEM011).

Supplementary material

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Carbon confinement synthesis of interlayer-expanded and sulfur-enriched MoS2+x nanocoating on hollow carbon spheres for advanced Li-S batteries


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Copyright information

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Wenda Li
    • 1
  • Dezhu Wang
    • 1
  • Zihao Song
    • 1
  • Zhijiang Gong
    • 1
  • Xiaosong Guo
    • 1
  • Jing Liu
    • 1
  • Zhonghua Zhang
    • 1
    Email author
  • Guicun Li
    • 1
    Email author
  1. 1.College of Materials Science and EngineeringQingdao University of Science and TechnologyQingdaoChina

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