The lithium metal anode has attracted soaring attention as an ideal battery anode. Unfortunately, nonuniform Li nucleation results in uncontrollable growth of dendritic Li, which incurs serious safety issues and poor electrochemical performance, hindering its practical applications. Herein, this study shows that uniform Li nucleation/growth can be induced by an ultralight 3D current collector consisting of in situ nitrogen‐doped graphitic carbon foams (NGCFs) to realize suppressing dendritic Li growth at the nucleating stage. The N‐containing functional groups guide homogenous growth of Li nucleus nanoparticles and the initial Li nucleus seed layer regulates the following well‐distributed Li growth. Benefiting from such favorable Li growth behavior, superior electrochemical performance can be achieved as evidenced by the high Coulombic efficiency (≈99.6% for 300 cycles), large capacity (10 mA h cm⁻², 3140 mA h g⁻¹_NGCF‐Li), and ultralong lifespan (>1200 h) together with low overpotential (<25 mV at 3 mA cm⁻²); even under a high current density up to 10 mA cm⁻², it still displays low overpotential of 62 mV.

中文翻译：

---

轻质氮掺杂石墨泡沫对高性能锂金属阳极的均匀成核/生长

锂金属负极作为理想的电池负极引起了人们的极大关注。不幸的是，不均匀的锂成核导致树枝状Li的不可控制的生长，这引起严重的安全问题和较差的电化学性能，从而阻碍了其实际应用。在本文中，这项研究表明，由原位氮掺杂石墨碳泡沫（NGCF）组成的超轻3D集电器可以诱导均匀的Li成核/生长，从而在成核阶段抑制树枝状Li的生长。含N的官能团可指导Li核纳米颗粒的均匀生长，并且初始Li核种子层可调节以下分布良好的Li的生长。受益于这种有利的锂生长行为，^-2，3140毫安汞^-1 _NGCF锂），和超长寿命（> 1200 1H）连同低超电势（<25毫伏以3mA厘米^-2）; 即使在高达10 mA cm ^-2的高电流密度下，它仍然显示出62 mV的低过电势。