Amino Acid-Induced Interface Charge Engineering Enables Highly Reversible Zn Anode

Haotian Lu, Xuanlin Zhang, Minghe Luo, Keshuang Cao, Yunhao Lu, Ben Bin Xu, Hongge Pan, Kai Tao, Yinzhu Jiang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Despite impressive merits of low-cost and high-safety electrochemical energy storage for aqueous zinc ion batteries, researchers struggled long against unsolved issues of dendrite growth and side reactions of zinc metal anode. Herein, a new strategy of zinc-electrolyte interface charge engineering induced by amino acid additive is demonstrated for highly reversible zinc plating/stripping. Through electrostatic preferential absorption of positively charged arginine molecules on the surface of zinc metal anode, a self-adaptive zinc-electrolyte interface is established for the inhibition of water adsorption/hydrogen evolution and the guidance of uniform zinc deposition. Consequently, an ultra-long stable cycling up to 2200 hours at a high current density of 5 mA cm-2 is achieved under an areal capacity of 4 mAh cm-2. Even cycled at an ultra-high current density of 10 mA cm-2, 900 hours-long stable cycling is still demonstrated, indicating a reliable self-adaptive feature of zinc-electrolyte interface. This work provides a new perspective of interface charge engineering in realizing highly reversible bulk zinc anode that could prompt its practical application in aqueous rechargeable zinc batteries.
Original languageEnglish
JournalAdvanced Functional Materials
Publication statusAccepted/In press - 26 Jul 2021

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