Back to Search
Start Over
Li2S@C composite incorporated into 3D reduced graphene oxide as a cathode material for lithium-sulfur batteries.
- Source :
-
Journal of Power Sources . May2016, Vol. 313, p233-239. 7p. - Publication Year :
- 2016
-
Abstract
- Surface conductive engineering on Li 2 S is critical for construction of advanced cathodes of lithium-sulfur batteries. Herein, we construct a high-performance Li 2 S-based composite cathode with the help of three-dimensional reduced graphene oxide (3D-rGO) network and outer carbon coating. Typically, the Li 2 S@C particles are uniformly embedded into 3D-rGO to form a binder-free 3D-rGO-Li 2 S@C cathode by the combination of a liquid solution-evaporation coating and PVP (Polyvinyl Pyrrolidone) carbonization. The 3D-rGO-Li 2 S@C cathode exhibits a high initial discharge capacity of 856 mAh g −1 at 0.1C, superior cycling stability with a capacity of 388.4 mAh g −1 after 200 cycles at 1C, corresponding to a low capacity fading rate. It is demonstrated that the outer conductive coating is effective and necessary for electrochemical enhancement of Li 2 S cathodes by improving electrical conductivity and prohibiting polysulfide from shuttling during cycling. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03787753
- Volume :
- 313
- Database :
- Academic Search Index
- Journal :
- Journal of Power Sources
- Publication Type :
- Academic Journal
- Accession number :
- 114001341
- Full Text :
- https://doi.org/10.1016/j.jpowsour.2016.03.001