The rapid development of wearable electronics has boosted the exploration of flexible and safe energy storage devices, such as zinc ion batteries or capacitors; and suppressing the dendrite growth for Zn anode is essential for enhancing their performance. Addressing this, we report a dendrite-free and flexible Zn metal anode (Zn@Cu-Ps/EG) that is based on expanded graphite (EG) decorated with in-situ formed copper particles (Cu-Ps). In this material, the Cu-Ps act as zincophilic seeds that reduce zinc nucleation overpotential, while the EG substrate induces epitaxial electrodeposition of zinc for suppressing dendrite growth. Moreover, the Cu-Ps nail the graphite nanosheets tightly and enhance the mechanical strength and flexibility of the Cu-Ps/EG composite. Consequently, the Zn@Cu-Ps/EG anode exhibits a low Zn deposition overpotential of 142.8 mV and superior cycling performance over 3000 h upon cycling at 10.0 mA cm⁻² and 10.0 mAh cm⁻². A flexible Zn-ion capacitor equipped with this anode delivers excellent cycling performance for over 1600 cycles at 1.0 A g⁻¹ and stable power output at various bending statuses. This work provides a new approach for designing advanced flexible and dendrite-free Zn metal anodes for energy storage applications.

可穿戴电子产品的快速发展推动了对柔性安全储能设备的探索，例如锌离子电池或电容器；抑制锌负极的枝晶生长对于提高其性能至关重要。为了解决这个问题，我们报告了一种无枝晶和柔性锌金属阳极 (Zn@Cu-Ps/EG)，它基于膨胀石墨 (EG)，原位装饰形成铜颗粒（Cu-Ps）。在这种材料中，Cu-Ps 充当降低锌成核过电位的亲锌种子，而 EG 基板诱导锌的外延电沉积以抑制枝晶生长。此外，Cu-Ps 紧紧地钉住了石墨纳米片，增强了 Cu-Ps/EG 复合材料的机械强度和柔韧性。^{因此，Zn@Cu-Ps/EG 阳极在 10.0 mA cm -2}和 10.0 mAh cm ^-2下循环时表现出 142.8 mV 的低 Zn 沉积过电位和超过 3000 小时的优异循环性能。配备该阳极的柔性锌离子电容器在 1.0 A g ^{-1下可提供超过 1600 次循环的出色循环性能}在各种弯曲状态下稳定的功率输出。这项工作为设计用于储能应用的先进柔性和无枝晶锌金属阳极提供了一种新方法。