Mesoporous Hybrid Electrolyte for Simultaneously Inhibiting Lithium Dendrites and Polysulfide Shuttle in Li–S Batteries,Advanced Energy Materials

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Mesoporous Hybrid Electrolyte for Simultaneously Inhibiting Lithium Dendrites and Polysulfide Shuttle in Li–S Batteries
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2018-02-16 , DOI: 10.1002/aenm.201703124
Nan Zhang ₁ , Bin Li ₁ , Songmei Li ₁ , Shubin Yang ₁

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A bifunctional hybrid electrolyte composed of mesoporous silica nanosheets and liquid electrolyte is achieved for lithium–sulfur (Li–S) batteries. This hybrid electrolyte possesses abundant mesopores (2.8 nm), thin feature (20 µm), and high ionic conductivity (1.17 × 10⁻¹ mS cm⁻¹) as well as a low interfacial resistance with electrodes. Such unique features not only enable the efficient inhibition of the growth of lithium dendrites, but also significantly prevents polysulfide shuttling. Consequently, a Li–S battery with this hybrid electrolyte exhibits a relatively high reversible capacity and good capacity retention.

中文翻译：

同时抑制锂锂电池中的锂枝晶和多硫化物穿梭的介孔混合电解质

用于锂硫（Li–S）电池的双功能混合电解质由介孔二氧化硅纳米片和液体电解质组成。该混合电解质具有丰富的中孔（2.8nm），薄的特征（20μm）和高的离子电导率（1.17×10 ^-1 mS cm ^-1）以及与电极的低界面电阻。这种独特的功能不仅可以有效抑制锂树枝状晶体的生长，而且可以显着防止多硫化物穿梭。因此，带有这种混合电解质的Li–S电池具有相对较高的可逆容量和良好的容量保持率。

更新日期：2018-02-16

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