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Highly conductive VC embedded in carbon matrix as effective trapper and catalyst for Li-S batteries
- Source :
- Chemical communications (Cambridge, England). 56(91)
- Publication Year :
- 2020
-
Abstract
- Vanadium carbide embedded in a nitrogen-doped carbon matrix (VC@NCM) is synthesized as a 3D freestanding sulfur host. Owing to the high electrical conductivity (1.6 × 104 S cm-1) of VC and strong chemisorption and catalytic effect on sulfur species, Li-S batteries with VC@NCM deliver enhanced redox kinetics with ultralow capacity decay of 0.01% per cycle after 1000 cycles at 1C. This work identifies the effect of strong chemisorption and high electrical conductivity on high S utilization and cycle stability in Li-S batteries.
- Subjects :
- Vanadium carbide
Materials science
Kinetics
Metals and Alloys
chemistry.chemical_element
General Chemistry
Sulfur
Redox
Catalysis
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
chemistry.chemical_compound
chemistry
Chemical engineering
Chemisorption
Electrical resistivity and conductivity
Materials Chemistry
Ceramics and Composites
Electrical conductor
Subjects
Details
- ISSN :
- 1364548X
- Volume :
- 56
- Issue :
- 91
- Database :
- OpenAIRE
- Journal :
- Chemical communications (Cambridge, England)
- Accession number :
- edsair.doi.dedup.....b909075c7cc41eb4178b8f9b49b66bfc