Lithium metal has been regarded as an ideal anode for high‐energy‐density batteries. However, safety and efficiency concerns still linger due to dendrite formation, reactions between the liquid electrolyte and lithium, high resistance with lithium metal, and the weight of interface layer. A new nanometer‐thick, hollow, Al₂O₃ fiber network with an elastic and porous 3D structure has been prepared through an atomic‐layer deposition process by using cotton sacrificial templates. Through a comparison study of the lithium deposition behavior by employing artificial layers with different structures, the low‐weight 3D layer with lithiophilic properties overcomes the issues resulting from the 2D rigid Al₂O₃ layer and provides a low overpotential and dendrite‐free growth of lithium metal. Moreover, stable lithium deposition enables Li–Li symmetric cells with a 3D artificial layer to be stably cycled 300 times in carbonate‐based electrolyte, with superior rate capability, and with a LiNi_1/3Co_1/3Mn_1/3O₂ cathode.

中文翻译：

---

低重量3D Al2O3网络作为稳定锂沉积的人工层

金属锂一直被认为是高能量密度电池的理想阳极。然而，由于枝晶的形成，液体电解质与锂之间的反应，对锂金属的高电阻以及界面层的重量，安全性和效率问题仍然存在。通过使用棉花牺牲模板，通过原子层沉积工艺，制备了一种具有弹性和多孔3D结构的新型纳米厚，中空的Al ₂ O ₃纤维网络。通过采用不同结构的人工层对锂的沉积行为进行比较研究，具有亲硫性的低重量3D层克服了2D刚性Al ₂ O ₃产生的问题可以提供低的过电位和无枝晶生长的锂金属。此外，稳定的锂沉积使具有3D人造层的Li–Li对称电池在基于碳酸盐的电解质中稳定循环300次，具有出色的倍率性能，并且具有LiNi _1/3 Co _1/3 Mn _1/3 O ₂阴极。