Self-supporting S@GO-FWCNTs composite films as positive electrodes for high-performance lithium-sulfur batteries

Lifeng Cui*, Yanan Xue, Suguru Noda, Zhongming Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Although lithium-sulfur (Li-S) batteries are a promising secondary power source, it still faces many technical challenges, such as rapid capacity decay and low sulfur utilization. The loading of sulfur and the weight percentage of sulfur in the cathode usually have a significant influence on the energy density. Herein, we report an easy synthesis of a self-supporting sulfur@graphene oxide-few-wall carbon nanotube (S@GO-FWCNT) composite cathode film, wherein an aluminum foil current collector is replaced by FWCNTs and sulfur particles are uniformly wrapped by graphene oxide along with FWCNTs. The 10 wt% FWCNT matrix through ultrasonication not only provided self-supporting properties without the aid of metallic foil, but also increased the electrical conductivity. The resulting S@GO-FWCNT composite electrode showed high rate performance and cycle stability up to ∼385.7 mA h gelectrode-1 after 500 cycles and close to ∼0.04% specific capacity degradation per cycle, which was better than a S@GO composite electrode (353.1 mA h gelectrode-1). This S@GO-FWCNT composite self-supporting film is a promising cathode material for high energy density rechargeable Li-S batteries.

Original languageEnglish
Pages (from-to)2260-2266
Number of pages7
JournalRSC Advances
Issue number5
Publication statusPublished - 2018

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)


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