Highly cyclable lithium-sulfur batteries with a dual-type sulfur cathode and a lithiated Si/SiO<inf>x</inf> nanosphere anode

Sang Kyu Lee, Seung Min Oh, Eunjun Park, Bruno Scrosati, Jusef Hassoun, Min Sik Park, Young Jun Kim, Hansu Kim, Ilias Belharouak, Yang Kook Sun

Research output: Contribution to journalArticle

86 Citations (Scopus)

Abstract

Lithium-sulfur batteries could become an excellent alternative to replace the currently used lithium-ion batteries due to their higher energy density and lower production cost; however, commercialization of lithium-sulfur batteries has so far been limited due to the cyclability problems associated with both the sulfur cathode and the lithium-metal anode. Herein, we demonstrate a highly reliable lithium-sulfur battery showing cycle performance comparable to that of lithium-ion batteries; our design uses a highly reversible dual-type sulfur cathode (solid sulfur electrode and polysulfide catholyte) and a lithiated Si/SiO<inf>x</inf> nanosphere anode. Our lithium-sulfur cell shows superior battery performance in terms of high specific capacity, excellent charge-discharge efficiency, and remarkable cycle life, delivering a specific capacity of ∼750 mAh g<sup>-1</sup> over 500 cycles (85% of the initial capacity). These promising behaviors may arise from a synergistic effect of the enhanced electrochemical performance of the newly designed anode and the optimized layout of the cathode.

Original languageEnglish
Pages (from-to)2863-2868
Number of pages6
JournalNano Letters
Volume15
Issue number5
DOIs
Publication statusPublished - 13 May 2015

Fingerprint

lithium sulfur batteries
Nanospheres
Sulfur
Anodes
Cathodes
anodes
sulfur
lithium
cathodes
electric batteries
Lithium
cycles
polysulfides
Polysulfides
production costs
commercialization
layouts
Life cycle
ions
flux density

Keywords

  • full cell
  • hybrid cathode
  • Lithium-sulfur battery
  • polysulfide-catholyte
  • silicon-based anode

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Lee, S. K., Oh, S. M., Park, E., Scrosati, B., Hassoun, J., Park, M. S., ... Sun, Y. K. (2015). Highly cyclable lithium-sulfur batteries with a dual-type sulfur cathode and a lithiated Si/SiO<inf>x</inf> nanosphere anode. Nano Letters, 15(5), 2863-2868. https://doi.org/10.1021/nl504460s

Highly cyclable lithium-sulfur batteries with a dual-type sulfur cathode and a lithiated Si/SiO<inf>x</inf> nanosphere anode. / Lee, Sang Kyu; Oh, Seung Min; Park, Eunjun; Scrosati, Bruno; Hassoun, Jusef; Park, Min Sik; Kim, Young Jun; Kim, Hansu; Belharouak, Ilias; Sun, Yang Kook.

In: Nano Letters, Vol. 15, No. 5, 13.05.2015, p. 2863-2868.

Research output: Contribution to journalArticle

Lee, SK, Oh, SM, Park, E, Scrosati, B, Hassoun, J, Park, MS, Kim, YJ, Kim, H, Belharouak, I & Sun, YK 2015, 'Highly cyclable lithium-sulfur batteries with a dual-type sulfur cathode and a lithiated Si/SiO<inf>x</inf> nanosphere anode', Nano Letters, vol. 15, no. 5, pp. 2863-2868. https://doi.org/10.1021/nl504460s
Lee, Sang Kyu ; Oh, Seung Min ; Park, Eunjun ; Scrosati, Bruno ; Hassoun, Jusef ; Park, Min Sik ; Kim, Young Jun ; Kim, Hansu ; Belharouak, Ilias ; Sun, Yang Kook. / Highly cyclable lithium-sulfur batteries with a dual-type sulfur cathode and a lithiated Si/SiO<inf>x</inf> nanosphere anode. In: Nano Letters. 2015 ; Vol. 15, No. 5. pp. 2863-2868.
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