Journal of Applied Electrochemistry

, Volume 49, Issue 2, pp 111–118 | Cite as

Enhancing the electrochemical performance of lithium sulfur batteries using cetyl trimethylammonium bromide coated separator

  • Sung Ho Cho
  • Sung Man Cho
  • Ki Yoon Bae
  • Byung Hyuk Kim
  • Byung Dae Son
  • Woo Young YoonEmail author
Research Article
Part of the following topical collections:
  1. Batteries


In this study, cetyltrimethylammonium bromide (CTAB)-modified separator is developed by using a simple and facile method for lithium–sulfur (Li–S) batteries. CTAB is coated on only one side of separator using a doctor blade. The coated CTAB on the separator improves wettability between separator and electrolyte and ionic conductivity of separator. In addition, CTAB also inhibits the migration of dissolved polysulfides to the anode side. These phenomena improve the electrochemical properties of Li–S batteries using CTAB-coated separators. Cells using the CTAB-coated separator exhibit an initial capacity of 1136 mAh g−1 at 0.2 C-rate. In addition, they can maintain a higher capacity (765 mAh g−1) and capacity retention rate (67.3%) after 150 cycles as compared to pristine Li–S batteries (549 mAh g−1 and 48.5%, respectively). These results indicate that the CTAB-coated separator can enhance the performance of Li–S batteries.

Graphical abstract


Li–S battery Cetyltrimethylammonium bromide Separator modification CTAB-coated separator 



This study was supported by grants from the National Research Foundation of Korea (NRF), the Korean government (MEST) (2016R1A2B3009481). SEM and EDS examination were performed at the Korea Basic Science Institute, Seoul Center.

Supplementary material

10800_2018_1262_MOESM1_ESM.docx (1.3 mb)
Supplementary material 1 (DOCX 194 KB)


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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  • Sung Ho Cho
    • 1
  • Sung Man Cho
    • 1
  • Ki Yoon Bae
    • 1
  • Byung Hyuk Kim
    • 1
  • Byung Dae Son
    • 1
  • Woo Young Yoon
    • 1
    Email author
  1. 1.Department of Materials Science and EngineeringKorea UniversitySeoulRepublic of Korea

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