The presolvation strategy of Li2S cathodes for lithium–sulfur batteries: a review

Journal of Materials Chemistry A Pub Date: 2022-04-09 DOI: 10.1039/D2TA01008A

Abstract

The presolvated Li2S cathodes can be matched with lithium metal-free electrodes to overcome the safety problems of lithium–sulfur batteries, which can contribute to promising devices for next-generation energy storage fields and enhance the performance of batteries by tailoring the solid–liquid reaction interface. Most importantly, this facile loading method of liquid Li2S can provide a new opportunity to construct a commercially viable assembly for industrial batteries. However, few reviews have concentrated on the challenges and opportunities of preliquid Li2S-based batteries. Hence, we provide an overview of recent results on preliquid Li2S cathodes for high-performance batteries. First, the synthetic methods of liquid Li2S are summarized with their features. This is then followed by an up-to-date account of different functional materials to reduce the overpotential of preliquid Li2S and improve the electrochemical properties by engineering the structure, tailoring the interface, modifying catalytic sites, and adding functional materials. Finally, a short outlook is proposed about the potential future developments and commercialization processes in preliquid Li2S-based batteries.

Graphical abstract: The presolvation strategy of Li2S cathodes for lithium–sulfur batteries: a review
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