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Ultrafine Sulfur Nanoparticles in Conducting Polymer Shell as Cathode Materials for High Performance Lithium/Sulfur Batteries
- Source :
- Scientific Reports
- Publication Year :
- 2013
- Publisher :
- Springer Science and Business Media LLC, 2013.
-
Abstract
- We report the synthesis of ultrafine S nanoparticles with diameter 10 ~ 20 nm via a membrane-assisted precipitation technique. The S nanoparticles were then coated with conducting poly (3,4-ethylenedioxythiophene) (PEDOT) to form S/PEDOT core/shell nanoparticles. The ultrasmall size of S nanoparticles facilitates the electrical conduction and improves sulfur utilization. The encapsulation of conducting PEDOT shell restricts the polysulfides diffusion, alleviates self-discharging and the shuttle effect, and thus enhances the cycling stability. The resulting S/PEDOT core/shell nanoparticles show initial discharge capacity of 1117 mAh g(-1) and a stable capacity of 930 mAh g(-1) after 50 cycles.
- Subjects :
- Materials science
Polymers
Nanoparticle
chemistry.chemical_element
Lithium
Electrochemistry
Article
law.invention
Electric Power Supplies
PEDOT:PSS
law
Electrodes
chemistry.chemical_classification
Conductive polymer
Multidisciplinary
Electric Conductivity
Polymer
Bridged Bicyclo Compounds, Heterocyclic
Sulfur
Cathode
chemistry
Chemical engineering
Nanoparticles
Sulfur utilization
Subjects
Details
- ISSN :
- 20452322
- Volume :
- 3
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....1d9f3ca54e68dc778c1d6f969f9e95ce