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Conductive porous vanadium nitride/graphene composite as chemical anchor of polysulfides for lithium-sulfur batteries

Open access
Sun, Zhenhua, Zhang, Jingqi, Yin, Lichang, Hu, Guangjian, Fang, Ruopian, Cheng, Hui-Ming, Li, Feng·2017·Nature Communications

Abstract

Although the rechargeable lithium–sulfur battery is an advanced energy storage system, its practical implementation has been impeded by many issues, in particular the shuttle effect causing rapid capacity fade and low Coulombic efficiency. Herein, we report a conductive porous vanadium nitride nanoribbon/graphene composite accommodating the catholyte as the cathode of a lithium–sulfur battery. The vanadium nitride/graphene composite provides strong anchoring for polysulfides and fast polysulfide conversion. The anchoring effect of vanadium nitride is confirmed by experimental and theoretical results. Owing to the high conductivity of vanadium nitride, the composite cathode exhibits lower polarization and faster redox reaction kinetics than a reduced graphene oxide cathode, showing good rate and cycling performances. The initial capacity reaches 1,471 mAh g−1 and the capacity after 100 cycles is 1,252 mAh g−1 at 0.2 C, a loss of only 15%, offering a potential for use in high energy lithium–sulfur batteries.

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Metadata

Authors
Sun, Z., Zhang, J., Yin, L., Hu, G., Fang, R., Cheng, H.-M., & Li, F.
Venue
Nature Communications
Published
2017-03-03
Volume
8
Issue
1
Pages
14627-14627
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2592400953
Cited by
1,135
References
2
FWCI
67.35
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Conductive porous vanadium nitride/graphene composite as chemical anchor of polysulfides for lithium-sulfur batteries. https://app.cochat.ai/papers/10.1038/ncomms14627
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Sun, Z., Zhang, J., Yin, L., Hu, G., Fang, R., Cheng, H.-M., & Li, F. (2017). Conductive porous vanadium nitride/graphene composite as chemical anchor of polysulfides for lithium-sulfur batteries. Nature Communications. https://doi.org/10.1038/ncomms14627

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