Jump to main content
Jump to site search


Nano-MgO/AB Decorated Separator to Suppress Shuttle Effect of Lithium-Sulfur Battery

Abstract

Lithium-Sulfur (Li-S) batteries are regarded as one of the most promising energy storage systems owing to high specific energy, low cost and eco-friendly. However, the significant capacity fading caused by the shuttle of soluble polysulfides from cathode to anode heavily hampers its practical applications. Here, we designed the nano-MgO/acetylene black (AB) decorated functional separator to suppress the shuttle of polysulfide intermediates, which can remarkably improve the electrochemical performance of Li-S batteries. Nano-MgO with the aid of AB conductive network exhibits superior adsorption to the polysulfides due to the synergetic effect of excellent chemisorption and improved electron conductivity. The electrochemical performance of the Li-S battery highly depends on the relative amount of nano-MgO and AB in the composite coating on separator. The battery with optimized decorated separator (MgO-25 separator, nano-MgO and acetylene black in the weight ratio of 1:3) exhibits a high initial discharge capacity of 1238mAh g-1 with high coulombic efficiency (~97%) and retains a high capacity of 875mAh g-1 after 100 cycles at 0.2C. This study promotes the understanding of synergetic effect of polysulfide adsorbent and conductive agent on suppressing the shuttle effect, and provide a way on design of polysulfide-blocking barrier for Li-S batteries.

Back to tab navigation

Supplementary files

Publication details

The article was received on 29 Dec 2018, accepted on 09 Feb 2019 and first published on 12 Feb 2019


Article type: Paper
DOI: 10.1039/C8NA00420J
Citation: Nanoscale Adv., 2019, Accepted Manuscript
  • Open access: Creative Commons BY license
  •   Request permissions

    Nano-MgO/AB Decorated Separator to Suppress Shuttle Effect of Lithium-Sulfur Battery

    W. Sun, X. Sun, Q. Peng, H. Wang, Y. Ge, N. Akhtar, Y. Huang and K. Wang, Nanoscale Adv., 2019, Accepted Manuscript , DOI: 10.1039/C8NA00420J

    This article is licensed under a Creative Commons Attribution 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.

    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