Lithium–sulfur batteries (LSBs) suffer from the unavoidable ‘shuttle effects’ of lithium polysulfides (LPSs) and the infinite volume change of the sulfur. Herein, the authors prepared a yolk–shell structured N-doped carbon nanotubes/sulfur/poly(3,4-ethylenedioxythiophene) nanotube (N-CNTs/S@PEDOT) composite as a cathode for LSBs. The yolk–shell structure with void spaces can effectively buffer the volume expansion of sulfur, while the outer ‘shell’ can act as a physical barrier to minimise the ‘shuttle effects’ of LPSs. Moreover, the N-CNTs with high conductivity and superior structural stability are able to improve the electron transfer efficiency and cycling performance. Therefore, the specially designed yolk–shell structured N-CNTs/S@PEDOT composite cathode exhibits an extraordinary rate performance and enhanced cycling stability (602 mAh g−1 after 200 cycles at 0.1 C).
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1 May 2022
Research Article|
November 16 2021
Yolk–shell structured sulfur composite cathode for high performance lithium–sulfur battery
Kaikai Tang, PhD;
Kaikai Tang, PhD
Joint International Laboratory on Environmental and Energy Frontier Materials, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
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Jun Xiao, PhD;
Jun Xiao, PhD
Joint International Laboratory on Environmental and Energy Frontier Materials, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
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Mengqi Long, MSc;
Mengqi Long, MSc
Joint International Laboratory on Environmental and Energy Frontier Materials, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
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Jun Chen, MSc;
Jun Chen, MSc
Joint International Laboratory on Environmental and Energy Frontier Materials, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
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Hong Gao, PhD;
Hong Gao, PhD
Joint International Laboratory on Environmental and Energy Frontier Materials, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
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Hao Liu, PhD
Joint International Laboratory on Environmental and Energy Frontier Materials, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China; Centre for Clean Energy Technology, Faculty of Science, University of Technology Sydney, Sydney, Australia
(corresponding author: hao.liu@uts.edu.au)
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(corresponding author: hao.liu@uts.edu.au)
Publisher: Emerald Publishing
Received:
September 10 2021
Accepted:
October 22 2021
Online ISSN: 2050-6260
Print ISSN: 2050-6252
ICE Publishing: All rights reserved
2022
Surface Innovations (2022) 10 (3): 209–216.
Article history
Received:
September 10 2021
Accepted:
October 22 2021
Citation
Tang K, Xiao J, Long M, Chen J, Gao H, Liu H (2022), "Yolk–shell structured sulfur composite cathode for high performance lithium–sulfur battery". Surface Innovations, Vol. 10 No. 3 pp. 209–216, doi: https://doi.org/10.1680/jsuin.21.00053
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