Journal
NATURE COMMUNICATIONS
Volume 8, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms14627
Keywords
-
Categories
Funding
- MOST [2016YFA0200100, 2014CB932402, 2016YFB0100100]
- National Science Foundation of China [51525206, 51521091, 51472249, 51372253, 51272051, U1401243]
- Youth Innovation Promotion Association of the Chinese Academy of Sciences [2015150]
- Natural Science Foundation of Liaoning province [2015021012]
- 'Strategic Priority Research Program' of the Chinese Academy of Sciences [XDA09010104]
- Key Research Program of the Chinese Academy of Sciences [KGZD-EW-T06]
- CAS/SAFEA International Partnership Program for Creative Research Teams
- Institute of Metal Research of the Chinese Academy of Sciences [XDA09010104, 2015-PY03]
Ask authors/readers for more resources
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 1,471mAhg(-1) and the capacity after 100 cycles is 1,252 mAhg(-1) at 0.2 C, a loss of only 15%, offering a potential for use in high energy lithium-sulfur batteries.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available