4.6 Article

Regulating electrodeposition behavior through enhanced mass transfer for stable lithium metal anodes

期刊

JOURNAL OF ENERGY CHEMISTRY
卷 55, 期 -, 页码 580-587

出版社

ELSEVIER
DOI: 10.1016/j.jechem.2020.07.019

关键词

Electrodeposition behavior; Mass transfer; Lithium dendrites; Lithium metal anodes

资金

  1. National Natural Science Foundation of China [51974256]
  2. Outstanding Young Scholars of Shaanxi [2019JC-12]
  3. Natural Science Basic Research Plan in Shaanxi Province of China [2019JLZ-01, 2019JLM-29]
  4. Fundamental Research Funds for the Central Universities [19GH020302, 3102019JC005]
  5. Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University [CX202005]

向作者/读者索取更多资源

This study investigates the effect of mass transfer on the electrodeposition behavior of lithium (Li) metal and finds that enhanced mass transfer induced by ultrasonic wave can homogenize ion flow on the electrode surface to achieve uniform Li nucleation and prevent preferential growth in specific directions, resulting in smooth and compact Li deposits.
Electrode process kinetics is a key part that determines the morphology of metal electrodeposition. However, the liquid-phase mass transfer process and its effect on lithium (Li) metal electrodeposition are still poorly understood. Herein, the effect of mass transfer on the electrodeposition behavior of Li metal is explored. Experiments and COMSOL Multiphysics simulations reveal that the enhanced mass transfer, which is induced by ultrasonic wave, can homogenize the ion flow on the surface of electrode to obtain uniform Li nucleation. Meanwhile, the rapid mass transfer of Li+ provides sufficient cations around the germinated Li to avoid preferential growth of Li in a specific direction. Based on the simultaneous regulation of nucleation and growth behavior, a smooth and compact Li deposits can be achieved, which exhibit a small polarization voltage during repeated Li plating/striping and a considerably enhanced cyclability. This work enriches the fundamental understanding of Li electrodeposition without dendrite structure and affords fresh guidance to develop dendrite-free metal anodes for metal-based batteries. (C) 2020 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据