Lithium metal has been regarded as the ultimate anode for next-generation rechargeable batteries with high energy density. However, its high reactivity and dendrite growth seriously limit its commercial application, which can be well addressed by realizing uniform Li deposition. Here, we report a facile and scalable one-step vulcanization method to modify commercial Cu foil with lithophilic Cu₂S. The in situ formed Cu₂S layer can not only promote the homogeneous deposition of Li via its lithophilic nature, but also benefit the formation of a stable solid-electrolyte interphase during initial activation. The Cu₂S-modified Cu current collector realizes dendrite-free Li plating/stripping and thus exhibits stable cycling performance with a high Coulombic efficiency, even with a large capacity of 4 mA h cm⁻². A full-cell consisting of a Cu₂S/Cu-Li anode and a LiFePO₄ cathode exhibits greatly improved cycling stability and enhanced Coulombic efficiency, demonstrating the effectiveness and practicability of the proposed Cu₂S/Cu foil in the field of rechargeable Li metal batteries.

金属锂已被视为具有高能量密度的下一代可充电电池的最终负极。然而，其高反应性和枝晶生长严重限制了其商业应用，这可以通过实现均匀的锂沉积来很好地解决。在这里，我们报道了一种简便且可扩展的一步硫化方法，用于用亲石性Cu ₂ S改性商品化铜箔。原位形成的Cu ₂ S层不仅可以通过其亲石性促进Li的均匀沉积，而且可以使Li受益。在初始活化过程中形成稳定的固体电解质中间相。铜₂S-改性的Cu集电器实现了无枝晶的Li镀覆/剥离，因此即使具有4mA h cm ^-2的大容量，也具有高库仑效率的稳定循环性能。由Cu ₂ S / Cu-Li阳极和LiFePO ₄阴极组成的全电池具有极大的循环稳定性和库伦效率，证明了拟议的Cu ₂ S / Cu箔在可再充电锂领域的有效性和实用性金属电池。