The Li metal anode is considered as one of the most promising candidates for next generation Li metal batteries (LMBs) due to the unique properties of high specific capacity, low potential and light weight. However, the crucial problems, including serious Li dendrite growth, undesired side reactions and infinite volume changes, are still big challenges for Li metal anodes, which can not only lead to the low Coulombic efficiency, but also can create short circuit risks. In this paper, we propose a novel and universal approach to achieve long life time and dendrite-free Li metal anodes by introducing carbon paper (CP) as an interlayer. As a result, the as-designed electrodes can deliver extremely high capacity (up to 3 mA h cm⁻² and 5 mA h cm⁻²), superior stable performances (620 h/265 cycles with 3 mA h cm⁻²) and high operational current densities (3 mA cm⁻² and 5 mA cm⁻²). Meanwhile, the electrodes also can demonstrate high capacity and long life time in full cells using carbon-coated LiFePO₄ (C/LiFePO₄) as the cathode for lithium ion batteries (LIBs) and molecular layer deposition (MLD) coated C/S as cathode for Li-S batteries. These new findings could open a new window for the fabrication of safe, long life time and dendrite-free Li metal anodes.

由于高比容量，低电势和重量轻的独特特性，锂金属阳极被认为是下一代锂金属电池（LMB）最有希望的候选材料之一。然而，严重的问题，包括严重的锂枝晶生长，不希望的副反应和无限的体积变化，仍然是锂金属阳极面临的巨大挑战，不仅会导致库仑效率低，还会产生短路风险。在本文中，我们提出了一种新颖且通用的方法，即通过引入碳纸（CP）作为中间层来实现长寿命和无枝晶的Li金属阳极。结果，设计好的电极可以提供极高的容量（高达3 mA h cm ^-2和5 mA h cm ^-2），卓越的稳定性能（620 mA / 265个循环，电流为3 mA h cm ^-2）和高工作电流密度（3 mA cm ^-2和5 mA cm ^-2）。同时，使用碳涂层的LiFePO ₄（C / LiFePO ₄）作为锂离子电池（LIBs）的阴极和分子层沉积（MLD）涂层的C / S作为阴极，电极在全电池中也可以显示出高容量和长寿命。锂电池正极。这些新发现可以为制造安全，长寿命和无枝晶的锂金属阳极开辟新的窗口。