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 language | English |
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Pages (from-to) | 1343-1347 |
Number of pages | 5 |
Journal | Chemistry - An Asian Journal |
Volume | 11 |
Issue number | 9 |
DOIs | |
Publication status | Published - 6 May 2016 |
Externally published | Yes |
Keywords
- carbon-sulfur hybrid
- core-shell structure
- FeS 2
- lithium-sulfur batteries
- pomegranate-like structure
ASJC Scopus subject areas
- General Chemistry