A carbon-sulfur hybrid with pomegranate-like structure for lithium-sulfur batteries

Yanting Shi, Wei Lv, Shuzhang Niu, Yanbing He, Guangmin Zhou, Guohua Chen, Baohua Li, Quan Hong Yang, Feiyu Kang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

14 Citations (Scopus)

Abstract

ÂKGaA, Weinheim. A carbon-sulfur hybrid with pomegranate-like core-shell structure, which demonstrates a high rate performance and relatively high cyclic stability, is obtained through carbonization of a carbon precursor in the presence of a sulfur precursor (FeS2) and a following oxidation of FeS2to sulfur by HNO3. Such a structure effectively protects the sulfur and leaves enough buffer space after Fe3+removal and, at the same time, has an interconnected conductive network. The capacity of the obtained hybrid is 450 mA h g-1under the current density of 5 C. This work provides a simple strategy to design and prepare various high-performance carbon-sulfur hybrids for lithium-sulfur batteries. Pomegranate recipe: A carbon-sulfur hybrid with pomegranate-like core-shell structure was obtained through carbonization of a carbon precursor in the presence of a sulfur precursor (FeS2), followed by oxidation of FeS2to sulfur by HNO3. The hybrid displays a high rate performance and relatively high cyclic stability.
Original languageEnglish
Pages (from-to)1343-1347
Number of pages5
JournalChemistry - An Asian Journal
Volume11
Issue number9
DOIs
Publication statusPublished - 6 May 2016
Externally publishedYes

Keywords

  • carbon-sulfur hybrid
  • core-shell structure
  • FeS 2
  • lithium-sulfur batteries
  • pomegranate-like structure

ASJC Scopus subject areas

  • Chemistry(all)

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