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.

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