Overcoming the fundemental limitations of lithium sulfur batteries

Abstract

Firstly, the strategies of chemical adsorption are used to control the shuttling of lithium polysulfides. ReS2 nanosheets, nitrogen-doped graphene and few-layer phosphorene nanosheets are used as chemi-cal immobilizers in the cathode structures of Li-S batteries. Experimental results combined with the theo-retical calculations show the existence of strong binding between lithium polysulfides and these chemical adsorbents, which limits the dissolution of lithium polysulfides into the electrolyte, improves electrochemi-cal stability and promotes fast electrochemical reaction kinetics.