Liu Chengcai, Zhang Yuanxing, Zhang Ling, Mu Daobin, Wu Borong
School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
Chongqing Innovation Center, Beijing Institute of Technology, Chongqing 401120, China.
ACS Appl Mater Interfaces. 2025 Jun 18;17(24):35340-35352. doi: 10.1021/acsami.4c18163. Epub 2025 Jun 3.
Uneven lithium deposition, which leads to the growth of lithium dendrites, presents a significant challenge in the practical application of high-energy lithium metal batteries. Herein, we report a high specific surface area carbon cloth (CC@ZnO) with uniform dispersion of nano zinc oxide as a collector for lithium metal battery (LMB). The uniformly dispersed zinc oxide in the CC@ZnO helps to achieve consistent lithium nucleation and growth with its lithophility. The high specific surface area of the CC@ZnO can promote the nucleation and growth of metallic lithium inside the current collector, greatly alleviating the adverse effects of the hostless nature of the metallic lithium anode. By utilizing this three-dimensional composite carbon cloth as a collector in lithium metal batteries, the Coulombic efficiency of lithium deposition and stripping is improved. The Li-Cu asymmetrical battery achieved a Coulombic efficiency of 97.6% after 120 cycles at 3 mA cm, with a deposition capacity of 3 mAh cm in an ether electrolyte without the addition of lithium nitrate.
不均匀的锂沉积会导致锂枝晶的生长，这在高能锂金属电池的实际应用中构成了重大挑战。在此，我们报道了一种具有均匀分散的纳米氧化锌的高比表面积碳布（CC@ZnO），作为锂金属电池（LMB）的集流体。CC@ZnO中均匀分散的氧化锌因其亲锂性有助于实现一致的锂成核和生长。CC@ZnO的高比表面积可促进集流体内部金属锂的成核和生长，极大地减轻了金属锂负极无基体性质的不利影响。通过在锂金属电池中使用这种三维复合碳布作为集流体，锂沉积和剥离的库仑效率得到了提高。Li-Cu不对称电池在3 mA cm下循环120次后，库仑效率达到97.6%，在不添加硝酸锂的醚类电解质中的沉积容量为3 mAh cm 。
