, Volume 25, Issue 2, pp 503–511 | Cite as

Functionalized N-doped hollow carbon spheres as sulfur host with enhanced electrochemical performances of lithium-sulfur batteries

  • Xiaoping Li
  • Zhenghui Pan
  • Zihao Li
  • Yaotang Zhong
  • Xianshu Wang
  • Mengqing Xu
  • Youhao Liao
  • Lidan Xing
  • Yongcai Qiu
  • Weishan LiEmail author
Original Paper


A novel composite, functionalized N-doped hollow carbon spheres (F-NHCS), is proposed as cathode host for improving the cycle stability and rate capability of a Li-S battery, which involves the functionalization of NHCS with oxygen-containing groups. The high electronic conductivity and abundant oxygen-containing functional groups of F-NHCS can not only be served as the conductive matrix for loading S as the cathode (F-NHCS-S) but also exhibit strong absorption capability to anchor S atoms and thus effectively solve the dissolution issue of intermediates polysulfides during cycling. As a result, the as-obtained F-NHCS-S cathode exhibits excellent performances: delivering an initial specific capacity of 827 mAh g−1 at 0.2 C with about 74 wt% S loading and retaining a specific capacity of 549 mAh g−1 after 100 cycles, compared to the respective 747 mAh g−1 and 182 mAh g−1 of the cathode based on the host without N-doping and functionalization (HCS-S). The fabrications of the hosts and the corresponding cathodes are demonstrated by the physical characterizations from SEM, TEM, XPS, XRD, FT-IR, BET, and TGA.


Li-S batteries Functionalized N-doped hollow carbon sphere Sulfur cathode Cycle stability Rate capability 


Funding information

This work is supported by the key project of Science and Technology in Guangdong Province (2017A010106006) and Extracurricular Research Project of South China Normal University (18HHGB02).


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Xiaoping Li
    • 1
  • Zhenghui Pan
    • 1
  • Zihao Li
    • 1
  • Yaotang Zhong
    • 1
  • Xianshu Wang
    • 1
  • Mengqing Xu
    • 1
    • 2
  • Youhao Liao
    • 1
    • 2
  • Lidan Xing
    • 1
    • 2
  • Yongcai Qiu
    • 1
    • 2
  • Weishan Li
    • 1
    • 2
    Email author
  1. 1.School of Chemistry and EnvironmentSouth China Normal UniversityGuangzhouChina
  2. 2.Engineering Research Center of MTEES (Ministry of Education), Research Center of BMET (Guangdong Province), and Key Laboratory of ETESPG (GHEI)South China Normal UniversityGuangzhouChina

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