J. Mater. Sci. Technol. ›› 2022, Vol. 117: 72-78.DOI: 10.1016/j.jmst.2021.10.040

• Research Article • Previous Articles     Next Articles

Reversible Zn stripping/plating achieved by surface thin Sn layer for high-performance aqueous zinc metal batteries

Bingfeng Cui, Yu Gao, Xiaopeng Han(), Wenbin Hu   

  1. Tianjin Key Laboratory of Composite and Functional Materials, Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
  • Received:2021-08-29 Revised:2021-10-17 Accepted:2021-10-26 Published:2022-01-20 Online:2022-08-01
  • Contact: Xiaopeng Han
  • About author:∗E-mail address: xphan@tju.edu.cn (X. Han).

Abstract:

Aqueous zinc metal batteries (ZMBs) are considered as the most promising candidate for large-scale energy storage system due to their abundant reserves and high safety. To achieve highly stable zinc metal batteries, it is imperative to inhibit the unavoidable dendrite growth, which leads to the non-uniform zinc deposition and even makes the battery short circuit. Herein, Sn coating is loaded on copper foil (SCF) by a simple electrodeposition to guide the uniform zinc deposition, which not only lowers the zinc nucleation overpotential but also promotes the uniform zinc deposition/dissolution. As a result, the Zn plated SCF (Zn@SCF) anode presents a low voltage hysteresis of ∼40 mV and a superior stability over 270 h in symmetric cells at a current density of 1 mA cm-2. Furthermore, the Zn@SCF anode can realize the improved performance for full cells paired with α-MnO2 cathode. This work provides a simple and effective approach to modify the Zn anode for improved electrochemical performance of ZMBs.

Key words: Tin coatings, Uniform zinc deposition, Zinc anode, Zinc metal batteries