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Issue 4, 2019
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Pyridinic and pyrrolic nitrogen-enriched carbon as a polysulfide blocker for high-performance lithium–sulfur batteries

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Abstract

Pyridinic and pyrrolic nitrogen-enriched carbon (CNx) with a high content of 16.95 atm% was simply prepared as an interlayer in Li–S batteries. For largely improving the electrochemical performance, it retarded the shuttle effect of polysulfides by chemical (main) and physical interactions. As a result, the as-constructed Li–S batteries with CNx still delivered a capacity of 730 mA h g−1 after 500 cycles at 1C with nearly 100% coulombic efficiency. When the mass loading of sulfur increased to 5 mg cm−2, the assembled Li–S battery also exhibited excellent electrochemical performance with a capacity of 4.57 mA h cm−2 at 0.1C after 40 cycles.

Graphical abstract: Pyridinic and pyrrolic nitrogen-enriched carbon as a polysulfide blocker for high-performance lithium–sulfur batteries

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Article information


Submitted
12 Jan 2019
Accepted
19 Feb 2019
First published
20 Feb 2019

Inorg. Chem. Front., 2019,6, 955-960
Article type
Research Article

Pyridinic and pyrrolic nitrogen-enriched carbon as a polysulfide blocker for high-performance lithium–sulfur batteries

K. Zhang, L. Wang, W. Cai, L. Chen, D. Wang, Y. Chen, H. Pan, L. Wang and Y. Qian, Inorg. Chem. Front., 2019, 6, 955
DOI: 10.1039/C9QI00052F

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