Decorating CoSe2 hollow nanospheres on reduced graphene oxide as advanced sulfur host material for performance enhanced lithium-sulfur batteries

  • Liang ChenEmail author
  • Weiwei Yang
  • Jianguo Liu
  • Yong Zhou
Research Article


Although lithium-sulfur batteries are one of promising rechargeable energy storage devices, their wide applications are impeded by the lithium polysulfides shuttle effect, low electronic conductivity of the cathode, and sluggish redox reaction kinetics of lithium polysulfides. In this work, reduced graphene oxide was decorated with CoSe2 hollow nanospheres to form an RGO-CoSe2 composite that was used as a host material to support S in the cathode. The RGO-CoSe2 composite has the following superiorities: (1) enhanced electronic conductivity, (2) accommodation of the volumetric change of cathode materials, (3) effective confinement of numerous lithium polysulfides species due to chemisorption, (4) expedition of the redox kinetics of lithium polysulfides. As expected, the RGO-CoSe2-based cathode exhibited the reversible specific capacity of 1,044.7 mAh/g at 0.2C and 695.7 mAh/g at 2C, together with excellent cycling stability of 0.071% average capacity decay per cycle over 400 cycles at 1C.


cobalt selenide hollow nanospheres chemisorption lithium-sulfur batteries 


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This project was supported by the National Natural Science Foundation of China (No. 51802029), Natural Science Foundation of Hunan Province, China (No. 2017JJ3343), Scientific Research Fund of Hunan Provincial Education Department (No. 17B028), Project of Changsha bureau of science and technology (No. k1705062), and Scientific Research for The Introduction of Talents of Changsha University (No. SF1606).

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Decorating CoSe2 hollow nanospheres on reduced graphene oxide as advanced sulfur host material for performance enhanced lithium-sulfur batteries


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Copyright information

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

Authors and Affiliations

  • Liang Chen
    • 1
    • 2
    Email author
  • Weiwei Yang
    • 2
  • Jianguo Liu
    • 2
  • Yong Zhou
    • 2
  1. 1.Hunan Collaborative Innovation Center of Environmental and Energy Photocatalysis, Hunan Key Laboratory of Applied Environmental PhotocatalysisChangsha UniversityChangshaChina
  2. 2.Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, College of Engineering and Applied SciencesNanjing UniversityNanjingChina

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