Boosting the electrocatalytic activity of 2D ultrathin BiOX/rGO (X = F, Cl, Br, and I) nanosheets as sulfur hosts: insight into the electronegativity effect of halogenated elements on the electrochemical performances of lithium–sulfur batteries

Abstract

Sluggish redox kinetics and the polysulfide shuttle effect hinder the commercialization of lithium-sulfur batteries. Here, we report an in-situ combination of BiOX (X = F, Cl, Br, I) and rGO...