Soluble inorganic quantum dots as an electrolyte additive to boost lithium–sulfur battery performance

Abstract

Herein, MoS₂ quantum dots (QDs) are constructed to serve as electrolyte additives for lithium–sulfur batteries, which can ‘solidify’ soluble polysulfides by chemisorption and promote sulfur conversion chemistry by electrocatalysis. The Li–S cell with MoS₂ QDs shows high retained capacity and high-rate capability, much better than the counterpart without MoS₂ QDs.