While aqueous Zn–ion batteries (AZIBs) are widely considered as a promising energy storage system due to their merits of low cost, high specific capacity, and safety, the practical implementation has been hindered by the Zn dendrite growth and undesirable parasitic reactions. To address these issues, a unique hydrophobic-ion-conducting cetyltrimethylammonium bromide-intercalated Mg–Al-layered double-hydroxide protective layer was constructed on the Zn anode (OMALDH-Zn) to modulate the nucleation behavior and desolvation process. The hydrophobic cetyl group long chain can inhibit the hydrogen evolution reaction and Zn corrosion by repelling water molecules from the anode surface and reducing the desolvation activation energy. Meanwhile, the Mg–Al LDH with abundant zincophilic active sites can modulate the Zn²⁺ ion flux, enabling the dendrite-free Zn deposition. Benefiting from this interfacial synergy, a long cycle life (>2300 h) with low and stable overpotential (<18 mV at 1 mA cm^–2) and excellent Coulombic efficiency (99.4%) for symmetrical and asymmetrical batteries were achieved. More impressively, excellent rate performance and long cyclic stability have been realized by OMALDH-Zn//MnO₂ batteries in both coin-type and pouch-type devices. This low-cost, simple, and high-efficiency coordinated modulation method provides a reliable strategy for the practical application of AZIBs.

中文翻译：

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通过 CTAB 插层镁铝层双氢氧化物保护层调节耐用锌金属阳极的去溶剂化活化能和锌沉积


虽然水系锌离子电池（AZIB）因其低成本、高比容量和安全性等优点而被广泛认为是一种有前途的储能系统，但其实际应用却受到锌枝晶生长和不良寄生反应的阻碍。为了解决这些问题，在锌阳极（OMALDH-Zn）上构建了独特的疏水离子传导十六烷基三甲基溴化铵插层镁铝层状双氢氧化物保护层，以调节成核行为和去溶剂化过程。疏水性十六基长链可以通过排斥阳极表面的水分子并降低去溶剂化活化能来抑制析氢反应和Zn腐蚀。同时，具有丰富亲锌活性位点的Mg-Al LDH可以调节Zn ²⁺ 离子通量，从而实现无枝晶的Zn沉积。受益于这种界面协同作用，对称和非对称电池具有长循环寿命（>2300 h）、低且稳定的过电势（1 mA cm ^–2 时<18 mV）和出色的库仑效率（99.4%）。实现了。更令人印象深刻的是，OMALDH-Zn//MnO ₂ 电池在纽扣型和袋型设备中都实现了优异的倍率性能和长循环稳定性。这种低成本、简单、高效的协调调制方法为AZIB的实际应用提供了可靠的策略。