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Vanadium-doped graphitic carbon nitride for high performance lithium–sulfur batteries.
- Source :
-
Chemical Communications . 11/21/2023, Vol. 59 Issue 90, p13458-13461. 4p. - Publication Year :
- 2023
-
Abstract
- To promote polysulfide conversion in lithium sulfur batteries (LSB) and alleviate the shuttle effect, we designed and fabricated a novel catalyst of vanadium-doped graphite phase carbon nitride with nitrogen defects (V@gC3N4-ND) and high vanadium loading (3.46 at%) by defect engineering and two-step pyrolysis. Employing a V@gC3N4-ND modified separator, the LSB yielded capacities of 934 mA h g−1 at 1C and 404 mA h g−1 at 4C; the former was retained by 61% and 45% after 500 and 1000 cycles, respectively. In particular, the initial capacity of the battery reached 969 mA h g−1 at a sulfur loading of 10.0 mg cm−2. This work provides a facile route to the preparation of high-loading vanadium active site catalysts with nitrogen defects in the support, which are promising for high performance LSB applications. [ABSTRACT FROM AUTHOR]
- Subjects :
- *LITHIUM sulfur batteries
*NITRIDES
*VANADIUM
*CARBON
Subjects
Details
- Language :
- English
- ISSN :
- 13597345
- Volume :
- 59
- Issue :
- 90
- Database :
- Academic Search Index
- Journal :
- Chemical Communications
- Publication Type :
- Academic Journal
- Accession number :
- 173554945
- Full Text :
- https://doi.org/10.1039/d3cc03422d