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首页> 外文期刊>Advanced Functional Materials >Water-Repellent Ionic Liquid Skinny Gels Customized for Aqueous Zn-Ion Battery Anodes
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Water-Repellent Ionic Liquid Skinny Gels Customized for Aqueous Zn-Ion Battery Anodes

机译：用于水性Zn离子电池阳极的防水离子液体露天凝胶

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摘要

Despite the enormous potential of aqueous zinc (Zn)-ion batteries as a cost-competitive and safer power source, their practical applications have been plagued by the chemical/electrochemical instability of Zn anodes with aqueous electrolytes. Here, ionic liquid (IL) skinny gels are reported as a new class of water-repellent ion-conducting protective layers customized for Zn anodes. The IL skinny gel (thickness approximate to 500 nm), consisting of hydrophobic IL solvent, Zn salts, and thiol-ene polymer compliant skeleton, prevents the access of water molecules to Zn anodes while allowing Zn2+ conduction for redox reactions. The IL-gel-skinned Zn anode enables sustainable Zn plating/stripping cyclability under 90% depth of discharge (DODZn) without suffering from water-triggered interfacial parasitic reactions. Driven by these advantageous effects, a Zn-ion full cell (IL-gel-skinned Zn-anode||aqueous-electrolyte-containing MnO2 cathode) exhibits high charge/discharge cycling performance (capacity retention approximate to 95.7% after 600 cycles) that lies beyond those achievable with conventional aqueous Zn-ion battery technologies.
机译：尽管锌（Zn）电池作为成本竞争力和更安全的电源的巨大潜力，但它们的实际应用已经通过Zn阳极与水性电解质的化学/电化学不稳定困扰。这里，将离子液体（IL）瘦性的凝胶作为为Zn阳极定制的新一类防水离子导电保护层。由疏水性IL溶剂，Zn盐和硫醇 - 烯聚合物的骨骼组成的IL瘦凝胶（厚度近似为500nm），防止水分子进入Zn阳极，同时允许Zn2 +用于氧化还原反应的传导。 IL-凝胶皮肤Zn阳极使得可持续的Zn电镀/汽提性在90％的排出深度（DoDZN）下不受水触发的界面寄生反应。受这些有益效果的驱动，Zn离子全细胞（IL-GEL-SHILLNED Zn-阳极|含水性电解质的MNO2阴极）表现出高充电/放电循环性能（在600次循环后容量保持近似为95.7％）除了以常规锌离子电池技术可实现的那些。

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