Rechargeable aqueous zinc-ion batteries (ZIBs) are attractive candidates for next-generation batteries because of low cost and high safety merits. However, ZIBs still suffer from the problems of dendrites growth during the electrostripping/electroplating process, leading to low cycling stability and hindering the application of ZIBs. Here, a facile and effective strategy of decorating zinc surface with copper alloy layer is developed. The copper alloy layer can act as a nucleating agent and mitigate Zn dendritic growth by guiding uniform Zn deposition. Symmetrical cells assembled with Cu_xZn_y coated Zn (denoted as Zn@Cu_xZn_y) electrode can achieve stable cycling for 500 h with a low voltage hysteresis (23 mV) at 1 mA/cm², compared to bare Zn cell with less than 100 h. The superiority of the prepared anode can also be confirmed by the repeated plating/stripping tests at current density of 0.25, 0.5 and 2 mA/cm², respectively. More impressively, when paired with a CNT/MnO₂ cathode, the full cell with Zn@Cu_xZn_y anode can maintains a more than twice the discharge capacity after 1000 cycles than that of the full cell with bare Zn anode (144 vs 57 mAh/g at 1 A/g). This strategy is scalable, versatile and cost-effective for fabricating a broad range of zinc metal anodes.

可充电水性锌离子电池（ZIBs）因其低成本和高安全性优点而成为下一代电池的有吸引力的候选者。然而，ZIBs在电剥离/电镀过程中仍然存在枝晶生长的问题，导致循环稳定性低，阻碍了ZIBs的应用。在这里，开发了一种用铜合金层装饰锌表面的简便有效的策略。铜合金层可以作为成核剂，通过引导均匀的 Zn 沉积来减缓 Zn 枝晶生长。用Cu _x Zn _y涂层Zn（表示为Zn@Cu _x Zn _y）电极组装的对称电池可以在1 mA/cm ²的低电压滞后（23 mV）下实现稳定循环500 h，与少于 100 小时的裸锌电池相比。制备的阳极的优越性也可以通过在电流密度分别为 0.25、0.5 和 2 mA/cm ²下的重复电镀/剥离试验来证实。更令人印象深刻的是，当与 CNT/MnO ₂阴极配对时，具有 Zn@Cu _x Zn _y阳极的全电池在 1000 次循环后可以保持比裸Zn 阳极全电池高两倍以上的放电容量（144 vs 57 mAh/g 在 1 A/g）。该策略具有可扩展性、通用性和成本效益，可用于制造各种锌金属阳极。