Oxygen doping in antimony sulfide nanosheets to facilitate catalytic conversion of polysulfides for lithium-sulfur batteries.

A high-performance catalyst, O-doped Sb2S3 nanosheets (SS-O NSs), is synthesized and introduced into lithium-sulfur batteries. Owing to their good conductivity, strong adsorbability/catalytic effect to polysulfides and fast Li+ diffusion, the SS-O NSs-modified cathodes can effectively mitigate the shuttle effect, thus achieving outstanding electrochemical performance.