Chemical substitution simultaneously constructing LiZn/LiCl composite protector to stabilize Li metal anode

Menghui Shi, Zenan Zhao, Wenze Cao, Ran Wang, Guoqiang Tan*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Tremendous efforts have been made towards addressing the Li-dendrite issue for enhancing the practical applicability of Li metal batteries. However, challenges remain in exploring simple and efficient surface engineering for achieving uniform Li plating/stripping. Herein we report a one-step chemical substitution method (3Li + ZnCl2 = LiZn + 2LiCl) that simultaneously constructs a LiZn/LiCl surface layer onto metal Li. The obtained Li- LiZn/LiCl anode exhibits a coralline-like cross-linked surface structure, in which the LiZn alloy component is beneficial for uniform Li-ion deposition, while the LiCl component can prevent the electron transfer from inside Li to the surface layer, so that Li plating occurs between bulk Li and LiZn/LiCl layer, inhibiting the Li-dendrite formation. As a result, this anode enables promising electrochemical performance, and a representative LiNi0.8Co0.1Mn0.1O2//Li-LiZn/LiCl cell maintains 77% capacity retention (~ 185 mAh g-1) after 300 cycles at 1.0 C rate. This study provides a straightforward and effective surface engineering for improving the anode of Li metal batteries.

Original languageEnglish
Title of host publicationTenth International Conference on Mechanical Engineering, Materials, and Automation Technology, MMEAT 2024
EditorsYunhui Liu, Zili Li
PublisherSPIE
ISBN (Electronic)9781510682634
DOIs
Publication statusPublished - 2024
Event10th International Conference on Mechanical Engineering, Materials, and Automation Technology, MMEAT 2024 - Wuhan, China
Duration: 21 Jun 202423 Jun 2024

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume13261
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference10th International Conference on Mechanical Engineering, Materials, and Automation Technology, MMEAT 2024
Country/TerritoryChina
CityWuhan
Period21/06/2423/06/24

Keywords

  • chemical substitution
  • Li anode
  • Li metal
  • LiZn alloy
  • simultaneous construction

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