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Accelerating Redox Kinetics of Lithium-Sulfur Batteries
Trends in Chemistry ( IF 15.7 ) Pub Date : 2020-09-25 , DOI: 10.1016/j.trechm.2020.09.001
Yi Chen , Xiaochun Gao , Dawei Su , Chengyin Wang , Guoxiu Wang

Lithium-sulfur (Li-S) batteries exhibit great promise for next-generation energy storage due to their high theoretical energy density and low cost. However, their practical application is largely hindered by the shuttle effect. Although previous studies on the adsorption of lithium polysulfides (LiPSs) have achieved significant progress, simple adsorption cannot fundamentally eliminate the shuttle effect. Physical and chemical confinement are useful to anchor LiPSs to some extent, but these are not effective for utilizing the blocked intermediates. Accordingly, accelerating polysulfide redox kinetics is crucial to radically mitigate the shuttle effect and increase sulfur utilization. Herein, recent advances in catalysts for boosting redox kinetics of Li-S batteries are reviewed. We also provide prospects on the design of more efficient catalysts for Li-S batteries.



中文翻译:

加速锂硫电池的氧化还原动力学

锂硫(Li-S)电池由于具有较高的理论能量密度和较低的成本,因此有望在下一代能量存储中大放异彩。但是,它们的实际应用在很大程度上受到穿梭效应的阻碍。尽管先前对吸附多硫化锂(LiPSs)的研究已取得重大进展,但简单的吸附并不能从根本上消除穿梭效应。物理和化学限制在某种程度上可用于锚定LiPS,但对于使用封闭的中间体无效。因此,加速多硫化物的氧化还原动力学对于从根本上减轻穿梭效应并增加硫的利用至关重要。在此,综述了用于提高Li-S电池的氧化还原动力学的催化剂的最新进展。

更新日期:2020-10-30
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