Aqueous zinc-ion batteries (ZIBs) are promising energy storage solutions with low cost and superior safety, but they suffer from chemical and electrochemical degradations closely related to the electrolyte. Here, a new zinc salt design and a drop-in solution for long cycle-life aqueous ZIBs are reported. The salt Zn(BBI)₂ with a rationally designed anion group, N-(benzenesulfonyl)benzenesulfonamide (BBI⁻), has a special amphiphilic molecular structure, which combines the benefits of hydrophilic and hydrophobic groups to properly tune the solubility and interfacial condition. This new zinc salt does not contain fluorine and is synthesized via a high-yield and low-cost method. It is shown that 1 m Zn(BBI)₂ aqueous electrolyte with a widened cathodic stability window effectively stabilizes Zn metal/H₂O interface, mitigates chemical and electrochemical degradations, and enables both symmetric and full cells using a zinc-metal electrode.

中文翻译：

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用于水性锌金属电池的新型锌盐化学

水系锌离子电池（ZIB）是一种很有前途的储能解决方案，具有低成本和卓越的安全性，但它们会遭受与电解质密切相关的化学和电化学降解。本文报道了一种新的锌盐设计和一种用于长循环寿命水性 ZIB 的直接解决方案。具有合理设计的阴离子基团N- (苯磺酰基)苯磺酰胺(BBI ^- )的盐Zn(BBI) ₂具有特殊的两亲分子结构，结合了亲水基团和疏水基团的优点，可以适当调节溶解度和界面条件。这种新型锌盐不含氟，是通过高产率、低成本的方法合成的。结果表明，1  m Zn(BBI) ₂具有更宽的阴极稳定性窗口的水性电解质可有效稳定锌金属/H ₂ O界面，减轻化学和电化学降解，并使用锌金属电极实现对称电池和全电池。