Volume 20, Issue 43 2403622
Research Article

Pre-Corrosion of Zinc Metal Anodes for Enhanced Stability and Kinetics

Jin Cao

Corresponding Author

Jin Cao

College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang, Hubei, 443002 P. R. China

Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, College of Electrical Engineering & New Energy, China Three Gorges University, Yichang, Hubei, 443002 P. R. China

State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004 P. R. China

E-mail: [email protected]; [email protected]; [email protected]; [email protected]

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Xu Wang

Xu Wang

Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, College of Electrical Engineering & New Energy, China Three Gorges University, Yichang, Hubei, 443002 P. R. China

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Dongdong Zhang

Dongdong Zhang

State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004 P. R. China

School of Materials Science and Engineering, Shenyang University of Technology, Shenyang, 110870 P. R. China

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Ding Luo

Ding Luo

Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, College of Electrical Engineering & New Energy, China Three Gorges University, Yichang, Hubei, 443002 P. R. China

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Lulu Zhang

Lulu Zhang

Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, College of Electrical Engineering & New Energy, China Three Gorges University, Yichang, Hubei, 443002 P. R. China

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Jiaqian Qin

Corresponding Author

Jiaqian Qin

Center of Excellence on Advanced Materials for Energy Storage, Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok, 10330 Thailand

E-mail: [email protected]; [email protected]; [email protected]; [email protected]

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Xinyu Zhang

Corresponding Author

Xinyu Zhang

State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004 P. R. China

E-mail: [email protected]; [email protected]; [email protected]; [email protected]

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Xuelin Yang

Corresponding Author

Xuelin Yang

Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, College of Electrical Engineering & New Energy, China Three Gorges University, Yichang, Hubei, 443002 P. R. China

E-mail: [email protected]; [email protected]; [email protected]; [email protected]

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First published: 22 June 2024
Citations: 11

Abstract

Non-uniform zinc plating/stripping in aqueous zinc-ion batteries (ZIBs) often leads to dendrites formation and low Coulombic efficiency (CE), limiting their large-scale application. In this study, a pre-corroded Zn (PC-Zn) anode with 3D ridge-like structure is constructed by a facile solution etching in sodium hypophosphite (NaH2PO2) solution. The surface preparation process can significantly remove impurities from the passivation layer of bare Zn anode, thus exposing a great quantity of active sites for easy plating/stripping. Moreover, the pre-corroded structure enables a uniform-distributed electric field to promote the 3D Zn2+ diffusion process and accelerate the transfer kinetics, thereby suppressing the zinc dendrites and interfacial side reactions. Consequently, symmetric cells with PC-Zn electrodes demonstrate remarkable stability, maintaining cycles for over 3200 h under 1 mA cm−2. The PC-Zn/VO2 full cell maintains a specific capacity of 361 mAh g−1 at 0.1 A g−1, and a capacity retention rate of ≈80% over 1000 cycles at 4 A g−1. Notably, no obvious dendrites and side reactions are detected after extended cycling. Leveraging the cost-effectiveness, environmentally friendly nature, and easy fabrication of the PC-Zn electrode, this Zn protection strategy holds promise for advancing the industrial application of ZIBs.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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