Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 845, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.155543
Keywords
Lithium-sulfur batteries; TiN; Graphene; Separator; Polysulfides
Categories
Funding
- National Natural Science Foundation of China [51602210]
- Fundamental Research Funds for the Central Universities of China [2017SCU04A05, YJ201470]
- Fund Program for the Scientific Activities of Selected Returned Overseas Professionals in Sichuan Province, China [CRSBF2019764, CRSBF201814501]
Ask authors/readers for more resources
Titanium nitride and nitrogen-doped graphene are widely used in lithium-sulfur batteries due to their excellent electronic conductivity and the ability to suppress polysulfides migration. However, complex and time-consuming preparation methods limit their practical applications. Therefore, we report the fabrication of titanium nitride/nitrogen-doped graphene (TiN/NG) nanocomposite as separator modifying material via a one-step solid state reaction. This unique structure of TiN/NG, in which ultrafine TiN nanoparticles are homogeneously distributed on the nitrogen-doped graphene skeleton, is favorable for the adsorption and conversion of polysulfides. As a result, the lithium-sulfur batteries with TiN/NG modified separator exhibit the excellent initial discharge capacity (1501 mAh/g at 0.1C) and long-term cycling stability (718 mAh/g at 1C, after 300 cycles). (C) 2020 Published by Elsevier B.V.
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