Acta Chimica Sinica ›› 2025, Vol. 83 ›› Issue (3): 237-301.DOI: 10.6023/A24120389 Previous Articles     Next Articles

Article

铟锡双金属修饰层协同抑制锌枝晶生长

李奔a, 赵宇b, 高欣a, 孙雨涵a, 赵宝雁a, 罗巧梅a, 鲍晓冰a, 苟蕾a, 崔艳华b,*(), 樊小勇a,*()   

  1. a 长安大学 材料科学与工程学院 西安 710061
    b 中国工程物理研究院电子工程研究所 绵阳 621000
  • 投稿日期:2024-12-31 发布日期:2025-02-26
  • 基金资助:
    国家自然科学基金面上项目(22179011); 西藏自治区重点研发项目(XZ202401ZY0104)

The Indium-tin Bimetallic Modification Layer Synergistically Inhibited Zinc Dendrite Growth

Ben Lia, Yu Zhaob, Xin Gaoa, Yuhan Suna, Baoyan Zhaoa, Qiaomei Luoa, Xiaobing Baoa, Lei Goua, Yanhua Cuib(), Xiaoyong Fana()   

  1. a School of Materials Science and Engineering, Chang’an University, Xi’an 710061, China
    b Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang, Sichuan Province 621000, China
  • Received:2024-12-31 Published:2025-02-26
  • Contact: *E-mail: cuiyanhua@netease.com; xyfan@chd.edu.cn; Tel.: 029-82337340
  • Supported by:
    National Natural Science Foundation of China(22179011); Key Research and Development Programs in Tibet Autonomous Region(XZ202401ZY0104)

Aqueous zinc-ion batteries are considered as a promising candidate for future grid energy storage due to their cost-effectiveness, safety, and environmental compatibility, however their large scale application is impeded by the stability and longevity issues stemming from dendrite growth, and side reactions such as passivation and hydrogen evolution. Herein, an indium-tin bimetallic layer is introduced onto the Zn electrode surface via sequential vapor deposition of indium and tin, comprehensively utilizing the indium layer with higher hydrogen evolution overpotential and greater adsorption energy for Zn atoms, the Sn layer with lower Zn2+ migration barrier to synergistically inhibit Zn dendrites, corrosion and hydrogen evolution, and simultaneously facilitate rapid transport of Zn2+ at the interface. The thickness of In-Sn layer is determined to be only two hundred nanometers, which can not only efficiently protect Zn electrode but also avoid the energy loss due to the increase of Zn electrode resistance. Both the X-ray diffraction (XRD) peaks of In and Sn are detected, assuring the synergistical effect of In and Sn layer. The contact angle of 2.0 mol•L−1 ZnSO4 on Zn electrode decreases from 102.31° to 54.35° after coating In-Sn layer, decreasing the contact impedance between Zn electrode and electrolyte. The linear sweep voltammetry (LSV) results demonstrate the hydrogen evolution potential decreases from -1.776 V (pure Zn) to -1.979 V after coating In-Sn layer, indicating less hydrogen evolution and side reactions. The corrosion current density of Zn@In@Sn displays the smallest value of 0.868 mA•cm−2, compared with those of Zn (4.017 mA•cm−2) and Zn@In (3.515 mA•cm−2), demonstrating less corrosion. Consequently, the Zn@In@Sn electrode demonstrates an extended lifespan of up to 3000 h under low polarization of 40 mV at a current density of 1 mA•cm−2 and an areal capacity of 0.5 mAh•cm−2, obviously better than those of Zn@In (64 mV, 1500 h) and Zn@Sn (85 mV, 1600 h). The full cell using manganese dioxide as the cathode and Zn@In@Sn as the anode maintains approximately 127.9 mAh•g−1 after 1000 stable cycles at a current density of 1 A•g−1.

Key words: Zn-ion battery, Zn electrode, indium-tin bimetallic layer, dendrite-free, high transferring kinetics