Uncontrollable growth of lithium (Li) dendrites and infinite volume change during cycling limit the practical implementation of Li metal anode in batteries. Three-dimensional (3D) porous materials with interconnected conductive skeleton are expected as ideal hosts to boost uniform Li deposition by reducing the local current density and Li nucleation barrier. However, surface modifications for the 3D conductive frameworks are complicated and costly, and most of these host materials can only afford shallow cycling at smaller current densities. Herein, a new strategy is proposed to fabricate rimous Cu foam (RCF) with ant-nest-like porous skeleton via a novel polysulfide-assisted reconstruction approach. The interconnected conducting Cu network with a larger and lithiophilic surface enables uniform and deep Li deposition into the interior space of RCF. The unique ant-nest-like interior channel not only endows a high intake capacity for Li, but also abstains volume fluctuation of Li anode during cycling. Therefore, the RCF-modified Li anode delivers excellent cycling stability with high Coulombic efficiency of 99% after 660 cycles at 1 mA cm^-2 and small overpotential of 30 mV over 200 h under a high plating/stripping rate of 3 mA cm^-2. More importantly, full cells paired with practical-level LiFePO₄ cathode exhibit exceptional performance under high current densities.

锂（Li）树枝状晶体的不可控制的生长以及循环期间无限的体积变化限制了锂金属阳极在电池中的实际应用。具有互连的导电骨架的三维（3D）多孔材料有望作为理想的基质，通过降低局部电流密度和Li成核势垒来促进均匀的Li沉积。但是，用于3D导电框架的表面修改既复杂又昂贵，并且这些主体材料中的大多数只能以较小的电流密度提供浅循环。在这里，提出了一种新的策略，通过一种新颖的多硫化物辅助重建方法，制造出具有蚁巢样多孔骨架的核状泡沫铜（RCF）。互连的导电Cu网络具有较大的亲脂性表面，可将均匀且深层的Li沉积到RCF的内部空间中。独特的类似蚂蚁巢的内部通道不仅赋予Li很高的进气能力，而且还避免了Li阳极在循环过程中的体积波动。因此，RCF改性的Li阳极在1 mA cm下经过660次循环后，具有出色的循环稳定性和99％的高库仑效率。^-2和在3 mA cm ^-2的高电镀/剥离速率下200 h内30 mV的小过电位。更重要的是，全电池与实用水平的LiFePO ₄阴极配对在高电流密度下表现出卓越的性能。