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Issue 40, 2016
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A simple melting-diffusing-reacting strategy to fabricate S/NiS2–C for lithium–sulfur batteries

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Abstract

S/NiS2–C composites were fabricated using a sample melting-diffusing-reacting strategy. When the elemental sulfur content in the composite is 54.9 wt%, it shows good cyclic performance and delivers a specific capacity of 730 mA h g−1 after 200 cycles at 0.5 C and 544 mA h g−1 after 500 cycles at 2 C. The elemental sulfur content can be adjusted, and when the elemental sulfur content is increased to 64.8 wt% and 76.0 wt%, the cathodes can maintain a stable cyclic capacity of 386 and 312 mA h g−1 after being discharged/charged at 2 C for 500 cycles respectively. The carbon structure and the uniformly distributed nickel disulfide in the S/NiS2–C composites efficiently stabilizes the polysulfides and also facilitates the conversion of electrochemical reactions.

Graphical abstract: A simple melting-diffusing-reacting strategy to fabricate S/NiS2–C for lithium–sulfur batteries

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Supplementary files

Article information


Submitted
16 Jul 2016
Accepted
18 Sep 2016
First published
19 Sep 2016

Nanoscale, 2016,8, 17616-17622
Article type
Paper

A simple melting-diffusing-reacting strategy to fabricate S/NiS2–C for lithium–sulfur batteries

Y. Lu, X. Li, J. Liang, L. Hu, Y. Zhu and Y. Qian, Nanoscale, 2016, 8, 17616
DOI: 10.1039/C6NR05626A

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