Sulfur encapsulated in thermally reduced graphite oxide as a cathode for Li-S batteries.

ABSTRACT: Rechargeable Li-S batteries are receiving ever-increasing attention due to their high theoretical energy density and inexpensive raw sulfur materials. However, their practical applications have been hindered by short cycle life and limited power density owing to the poor electronic conductivity of sulfur species, diffusion of soluble polysulfide intermediates (Li₂S _n , n = 4-8) and the large volume change of the S cathode during charge/discharge. Optimizing the carbon framework is considered as an effective approach for constructing high performance S/carbon cathodes because the microstructure of the carbon host plays an important role in stabilizing S and restricting the "shuttle reaction" of polysulfides in Li-S batteries. In this work, reduced graphit

SUBMITTER: Xu X 

PROVIDER: S-EPMC9078096 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature