Combining three-dimensional (3D) current collectors and zincophilic species is considered an efficient way to construct highly stable Zn metal anodes. Unfortunately, costly and complex preparation processes impede their practical application. Herein, a dendrite-free 3D Zn metal composite anode (Zn@ACC-600@Cu²⁺) has been rationally designed by plating Zn on a Cu²⁺-coordinated carbon cloth current collector (ACC-600@Cu²⁺). In particular, during the Zn nucleation process, Cu²⁺ is reduced in situ to metallic Cu and then forms a zincophilic Cu-Zn alloy with further Zn deposition. Density functional theory calculations and experimental observations reveal that the Cu-Zn alloy interface can not only act as a zincophilic deposition site for Zn ions but also enhance the conductivity to homogenize the electric field and Zn²⁺ flux. Thus, the ACC-600@Cu²⁺ host enables the high reversibility of Zn plating/stripping and long cycling stability for more than 410 h with a low-voltage hysteresis of 15.8 mV. As a proof-of-concept demonstration, the assembled Zn@ACC-600@Cu²⁺∥MnO₂ full batteries show a decent rate capability and a substantially enhanced specific capacity of 110 mA h g⁻¹ compared with the pristine carbon cloth-based full cells. This in situ reduction strategy establishes a facile method for designing 3D Zn metal composite anodes that advances the development of dendrite-free and durable Zn metal batteries.

结合三维 (3D) 集电器和亲锌物质被认为是构建高度稳定的锌金属阳极的有效方法。不幸的是，昂贵且复杂的制备过程阻碍了它们的实际应用。^{在此，通过在Cu 2+}配位碳布集电器（ACC-600@Cu ²⁺ ）上镀锌，合理设计了无枝晶3D Zn金属复合负极（Zn@ACC-600 @Cu ²⁺）。特别地，在 Zn 成核过程中，Cu ^2+被原位还原到金属 Cu，然后形成亲锌 Cu-Zn 合金，并进一步沉积 Zn。密度泛函理论计算和实验观察表明，Cu-Zn合金界面不仅可以作为Zn离子的亲锌沉积位点，还可以增强电导率以均匀电场和Zn ²⁺通量。因此，ACC-600@Cu ²⁺主体可实现镀锌/剥离的高可逆性和超过 410 小时的长循环稳定性，并具有 15.8 mV 的低电压滞后。作为概念验证演示，组装的 Zn@ACC-600@Cu ²⁺ ∥MnO ₂全电池显示出不错的倍率能力和显着增强的比容量 110 mA hg ⁻¹与原始碳布基全电池相比。这种原位还原策略为设计 3D 锌金属复合阳极提供了一种简便的方法，从而推动了无枝晶和耐用锌金属电池的开发。