Jump to main content
Jump to site search

Issue 24, 2017
Previous Article Next Article

Balancing the chemisorption and charge transport properties of the interlayer in lithium–sulfur batteries

Author affiliations

Abstract

This study introduces an improved design of the interlayer between the cathode and separator of rechargeable lithium–sulfur batteries to mitigate the polysulfide crossover problem of the latter. The design involves integrating carbon nanotubes with titanium dioxide by a facile room-temperature hydrolytic method to form a titanium dioxide coated carbon nanotube composite (CNT@TiO2) with customizable TiO2 content. The CNT@TiO2 composite was then coated on a separator to form an interlayer much thinner than other standalone interlayers. The TiO2 coating on the CNT surface provides the facility for lithium polysulfides (LiPS) interception by chemisorption, and the underlying CNT core renders the intercepted LiPS electrochemically viable in charging and discharging. A good balance between the chemisorption properties of TiO2 and the charge transport properties of the CNTs is required to deliver a good interlayer performance because of the complementarity of these functions. Consequently, a battery with an optimized CNT@TiO2 interlayer composition could deliver a high initial capacity of 1351 mA h g−1 and a discharge capacity of 803 mA h g−1 after 200 cycles at 0.1C, for less than half of the thickness of a typical standalone interlayer (12 μm).

Graphical abstract: Balancing the chemisorption and charge transport properties of the interlayer in lithium–sulfur batteries

Back to tab navigation

Supplementary files

Publication details

The article was received on 13 Feb 2017, accepted on 15 May 2017 and first published on 16 May 2017


Article type: Paper
DOI: 10.1039/C7TA01352C
Citation: J. Mater. Chem. A, 2017,5, 12506-12512
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    Balancing the chemisorption and charge transport properties of the interlayer in lithium–sulfur batteries

    L. Yang, G. Li, X. Jiang, T. Zhang, H. Lin and J. Y. Lee, J. Mater. Chem. A, 2017, 5, 12506
    DOI: 10.1039/C7TA01352C

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements