Ultrathin Lithiophilic 3D Arrayed Skeleton Enabling Spatial‐Selection Deposition for Dendrite‐Free Lithium Anodes
Guanhua Zhang, Huihuang Yu, Du Li, Yushan Yan, Donghai Wei, Jinghua Ye, Yanli Zhao, Wei Zeng, Huigao Duan
Abstract
Abstract Lithium metal batteries are promising to become a new generation of energy storage batteries. However, the growth of Li dendrites and the volume expansion of the anode are serious constraints to their commercial implementation. Herein, a controllable strategy is proposed to construct an ultrathin 3D hierarchical host of honeycomb copper micromesh loaded with lithiophilic copper oxide nanowires (CMMC). The uniquely designed 3D hierarchical arrayed skeletons demonstrate a surface‐preferred and spatial‐selective effect to homogenize local current density and relieve the volume expansion, effectively suppressing the dendrite growth. Employing the constructed CMMC current collector in a half‐cell, >400 cycles with 99% coulombic efficiency at 0.5 mA cm −2 is performed. The symmetric battery cycles stably for >2000 h, and the full battery delivers a capacity of 166.6 mAh g −1 . This facile and controllable approach provides an effective strategy for constructing high‐performance lithium metal batteries.