Reduced graphene oxide/TiO₂(B) nanocomposite-modified separator as an efficient inhibitor of polysulfide shuttling in Li-S batteries.

ABSTRACT: The shutting effect in lithium-sulfur (Li-S) batteries hinders their widespread application, which can be restrained effectively by a modified separator. In this work, a composite of reduced graphene oxide and beta-phase TiO₂ nanoparticles (RGO/TiO₂(B)) is designed as a separator modification material for improving the electrochemical behavior of Li-S batteries. The TiO₂(B) nanoparticles are in situ prepared and tightly adhere to the RGO layer. A series of examinations demonstrated that the RGO/TiO₂(B)-coated separator efficiently inhibits the polysulfide shuttling phenomenon by the cooperative effect of physical adsorption and chemical binding. Specifically, as modified separators, a comparison between TiO₂(B) and anatase TiO

SUBMITTER: Chen P 

PROVIDER: S-EPMC9049200 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature