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

Menghui Shi; Zenan Zhao; Wenze Cao; Ran Wang; Guoqiang Tan

doi:10.1117/12.3046635

27 September 2024 Chemical substitution simultaneously constructing LiZn/LiCl composite protector to stabilize Li metal anode

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

Author Affiliations +

Proceedings Volume 13261, Tenth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2024); 132612A (2024) https://doi.org/10.1117/12.3046635
Event: 10th International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2024), 2024, Wuhan, China

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 ontometal Li. The obtained Li- LiZn/LiCl anode exhibits a corallinelike 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 LiNi_0.8Co_0.1Mn_0.1O₂//Li-LiZn/LiCl cell maintains 77% capacity retention (~ 185 mAh g^-1) after 300 cycles at 1.0 C rate. This studyprovides a straightforward and effective surface engineering for improving the anode of Li metal batteries.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Menghui Shi, Zenan Zhao, Wenze Cao, Ran Wang, and Guoqiang Tan "Chemical substitution simultaneously constructing LiZn/LiCl composite protector to stabilize Li metal anode", Proc. SPIE 13261, Tenth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2024), 132612A (27 September 2024); https://doi.org/10.1117/12.3046635

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