, Volume 23, Issue 11, pp 2951–2960 | Cite as

Synthesis and electrochemical performance of micro-mesoporous carbon-sulfur composite cathode for Li–S batteries

  • Yanan Liu
  • Meng Cheng
  • Xiaodong Guo
  • Zhenguo Wu
  • Yanxiao Chen
  • Wei Xiang
  • Jianshu Li
  • Benhe Zhong
Original Paper


Even though significant improvement has been made in the Li–S battery technology, the poor cycling and rate performance have always limited the further growth. Thus, the development of cost-effective and high performing electrodes is considered to be an important technology for the practical aspect. It is quite logical that the porous electrode systems can improve the electrochemical performance of a given battery system. Here, this study benchmarks a new class of electrodes based on double (micro and meso)porous carbon spheres (MMPCs) prepared by a facile soft template method followed by wet chemical etching. The particle size analysis, performed by scanning electron microscopy, shows that the templating agents, such as sodium dodecyl sulfate (SDS) and cetyltrimethylammonium bromide(CTAB), have a distinct effect on the size distribution of carbon particles. Different electrochemical characterizations have been carried out to understand the effect of SDS and CTAB on the electrochemical performance of carbon-sulfur nanocomposite electrode. BET analysis shows that the pore size distribution of the carbon spheres prepared by only the soft template method (MPCs) is mainly in the micropore range, which limits the storage and the dispersive capacity. However, the etched samples (MMPCs) showed better electrochemical performance, such as high initial discharge capacity of 921 mAh g−1(sulfur loading ∼77.2%) with 82.7% capacity retention at the end of 150 cycles at 200 mA g−1 and an impressive rate capability of 1086 mAh g−1 at a current density of 100 mA g−1.This improved performance could be attributed to the double porous structure of MMPCs. Such a feasible and facile architecture provides a good strategy to prepare other different materials that require better material dispersion and electrode/electrolyte interactions.


Micro-mesoporous carbon Soft template Electrochemical performance Lithium-sulfur batteries 



This work was supported by the National Natural Science funds (21534008).

Supplementary material

11581_2017_2125_MOESM1_ESM.doc (56 kb)
ESM 1 (DOC 56 kb)


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Copyright information

© Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Yanan Liu
    • 1
  • Meng Cheng
    • 1
  • Xiaodong Guo
    • 1
  • Zhenguo Wu
    • 1
  • Yanxiao Chen
    • 1
  • Wei Xiang
    • 2
  • Jianshu Li
    • 3
  • Benhe Zhong
    • 1
  1. 1.School of Chemical EngineeringSichuan UniversityChengduPeople’s Republic of China
  2. 2.College of Materials and Chemistry &Chemical EngineeringChengdu University of TechnologyChengduPeople’s Republic of China
  3. 3.College of Polymer Science and Engineering, State Kay Laboratory of Polymer Materials EngineeringSichuan UniversityChengduPeople’s Republic of China

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