Constructing Co₃S₄ Nanosheets Coating N-Doped Carbon Nanofibers as Freestanding Sulfur Host for High-Performance Lithium-Sulfur Batteries.

ABSTRACT: Lithium-sulfur batteries (LSBs) have shown great potential as a rival for next generation batteries, for its relatively high theoretical capacity and eco-friendly properties. Nevertheless, blocked by the shuttle effect of lithium polysulfides (LPSs, Li₂S₄-Li₂S₈) and insulation of sulfur, LSBs show rapid capacity loss and cannot achieve the practical application. Herein, a composite of carbon nanofibers coated by Co₃S₄ nanosheets (denoted as CNF@Co₃S₄) is successfully synthesized as freestanding sulfur host to optimize the interaction with sulfur species. The combination of the two materials can lead extraordinary cycling and rate performance by alleviating the shuttle of LPSs effectively. N-doped carbon

SUBMITTER: Zhang X 

PROVIDER: S-EPMC7675184 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature