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Adaptive No‐Tip Distribution of Rich Charge‐Density‐Clusters Guiding Confinement Deposition with Repair Function toward Highly Reversible Zinc Anode.

Authors :
Hu, Xiaomeng
He, Zhongqian
Zhao, Qiwen
Zhou, Jie
Wang, Changding
Huang, Shaozhen
Zhou, Gang
Xu, Bingang
Wang, Bin
Chen, Libao
Chen, Yuejiao
Source :
Advanced Functional Materials. Aug2024, p1. 11p. 7 Illustrations.
Publication Year :
2024

Abstract

The plating/stripping behavior of Zn ions on the Zn anode, driven by an electric field, is a key process in determining the performance of aqueous zinc ion batteries (AZIBs). Process‐induced unevenness of commercial Zn foils results in poor reversibility of Zn anodes. Herein, a self‐healing dynamic anode/electrolyte interface is constructed by incorporating hydroxyl‐rich alcohols with high charge density and zincophilicity into the original electrolyte. These alcohols selectively anchor on electron‐poor sites in the charging state, inducing domain‐limited deposition of Zn2+ to achieve a dense, uniform, and flat deposition state. As a result, a durable Zn anode with excellent electrochemical reversibility can be realized in practical cycling (average Coulombic efficiency of 99.5%). Even under deep plating/stripping conditions (5 mA cm−2 and 5mAh cm−2), the modified electrolyte exhibits a remarkable repair effect on corroded Zn anodes that have been cycled in base electrolyte, extending the lifespan to over 1,020 h. This represents a 15.6‐fold enhancement in lifespan compared to recycling in the base electrolyte. This strategy for electrolyte additive directly influences the design of ultra‐long‐life AZIBs and provides concrete concepts for the recovery of zinc anodes. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
1616301X
Database :
Academic Search Index
Journal :
Advanced Functional Materials
Publication Type :
Academic Journal
Accession number :
179102118
Full Text :
https://doi.org/10.1002/adfm.202409247