Dendrite growth and by-products in aqueous Zn ion batteries have been impeded their rapid development as energy storage devices. Here we utilized a concentric-ring like additive, hexaoxacyclooctadecane (18-crown-6, 18C6), into typical ZnSO₄ electrolytes to hook the Zn ion on surface by confinement effects during the electrochemical process. Combining experimental characterization and theoretical calculations, the dynamics were systematically investigated to offer a deceleration Zn deposition, in which a low charge transfer barrier and a high desolvation barrier were harvested simultaneously with 18C6. It regulated the solventized structure of Zn ions and held the steady hydrophobic interface during the electrochemistry process. The by-products yield was extremely low. Zn symmetric cells be cycled over 2400 h at 1 mA cm⁻² and 1 mAh cm⁻². These studies provided an effective strategy to reach the dendrite-free and high-density Zn energy storage devices.

水系锌离子电池中的枝晶生长和副产物阻碍了它们作为储能装置的快速发展。在这里，我们使用同心环状添加剂六氧杂环十八烷 (18-crown-6, 18C6) 加入典型的 ZnSO ₄电解质在电化学过程中通过限制效应将锌离子钩在表面上。结合实验表征和理论计算，系统地研究了动力学以提供减速锌沉积，其中低电荷转移势垒和高去溶剂化势垒与 18C6 同时收获。它调节锌离子的溶剂化结构并在电化学过程中保持稳定的疏水界面。副产品产率极低。锌对称电池在1 mA cm ^-2和1 mAh cm ^-2下循环超过2400 小时。这些研究为实现无枝晶和高密度锌储能装置提供了一种有效的策略。