The use of electrolyte additives is an efficient approach to mitigating undesirable side reactions and dendrites. However, the existing electrolyte additives do not effectively regulate both the chaotic diffusion of Zn²⁺ and the decomposition of H₂O simultaneously. Herein, a dual-parasitic method is introduced to address the aforementioned issues by incorporating 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([EMIm]OTf) as cosolvent into the Zn(OTf)₂ electrolyte. Specifically, the OTf^– anion is parasitic in the solvent sheath of Zn²⁺ to decrease the number of active H₂O. Additionally, the EMIm⁺ cation can construct an electrostatic shield layer and a hybrid organic/inorganic solid electrolyte interface layer to optimize the deposition behavior of Zn²⁺. This results in a Zn anode with a reversible cycle life of 3000 h, the longest cycle life of full cells (25,000 cycles), and an extremely high initial capacity (4.5 mA h cm^–2), providing a promising electrolyte solution for practical applications of rechargeable aqueous zinc-ion batteries.

中文翻译：

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双寄生效应可实现高度可逆的锌金属阳极，用于超长 25,000 次循环水系锌离子电池

使用电解质添加剂是减轻不良副反应和枝晶的有效方法。然而，现有的电解质添加剂不能同时有效调节Zn ^{2+的混沌扩散和H} ₂ O的分解。在此，引入双寄生方法通过将1-乙基-3-甲基咪唑鎓三氟甲磺酸盐([EMIm]OTf)作为共溶剂引入到Zn(OTf) ₂电解质中来解决上述问题。具体来说，OTf ^-阴离子寄生在Zn ^{2+的溶剂鞘中，以减少活性H} ₂ O的数量。此外，EMIm ⁺阳离子可以构建静电屏蔽层和混合有机/无机固体电解质界面层，以优化Zn ²⁺的沉积行为。由此产生的锌负极可逆循环寿命为3000小时，是全电池最长的循环寿命（25,000次循环），并且具有极高的初始容量（4.5 mA h cm ^–2），为实际应用提供了一种有前景的电解质溶液可充电水性锌离子电池。