高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

构筑镧基耐蚀膜助力水系锌离子电池实现超长循环寿命

苟蕾，孙爱红，梁凯，王延静，樊小勇，李东林   

  1. 长安大学材料科学与工程学院
  • 收稿日期:2025-04-11 修回日期:2025-07-26 网络首发:2025-08-01 发布日期:2025-08-01
  • 通讯作者: 苟蕾 E-mail:leigou@chd.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 22179011)、咸阳市秦创原科技创新专项(批准号:L 2022-QCYZX-GY-005)、陕西省重点研发计划(批准号: 2023-YBGY-445)和陕西省教育厅服务地方专项计划项目(批准号: 22JE001)资助

Construction of Lanthanide-based Corrosion-resistant Films for Aqueous Zinc Batteries with Ultra-long Cycle Life

GOU Lei, SUN Aihong, LIANG Kai, WANG Yanjing, FAN Xiaoyong, LI Donglin   

  1. School of Materials Science and Engineering, Chang’an University
  • Received:2025-04-11 Revised:2025-07-26 Online First:2025-08-01 Published:2025-08-01
  • Contact: GOU Lei E-mail:leigou@chd.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(No. 22179011), the Xianyang Qinchuangyuan Science and Technology Innovation Project, China(No. L2022-QCYZX-GY-005), the Key Research and Development Program of Shaanxi, China(No. 2023-YBGY-445), the Special Scientific Research Project for Local Service, Shaanxi Province Education Department, China(No. 22JE001) and the Fundamental Research Funds for the Central Universities, CHD, China(No. 300102315501)

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摘要： 本文在锌负极表面生长的镧基耐蚀膜（LaCRF）有效降低了锌离子的成核过电位，显著抑制了锌枝晶、基体腐蚀和副产物的生成。电化学性能测试表明，采用Zn@LaCRF改性的对称电池在2 mA·cm-2 - 1 mAh·cm-2的电流密度条件下展现出超过3000小时的循环稳定性和较小的极化现象。此外，在Zn@LaCRF // Cu半电池中，循环次数超过800次；同时，在Zn@LaCRF // MnO2全电池中，在1.8 A·g-1的电流密度下经过2000次循环后，容量保持率高达91.9 %。本研究不仅为解决锌负极的腐蚀问题提供了新的解决途径，也为稀土元素在可充电水系锌离子电池中的应用开辟了新方向。

关键词: 水系锌电池, 锌负极, 耐腐膜, 稀土元素, 长循环性能

Abstract: Herein, a lanthanum-based corrosion-resistant film (LaCRF) was grown on the surface of the zinc anode, which effectively reduced the nucleation overpotential of zinc ions and significantly inhibited the formation of zinc dendrites, substrate corrosion, and by-products. Electrochemical performance tests indicate that symmetric cells modified with LaCRF exhibited over 3000 hours of cycling stability and minimal polarization at a current density of 2 mA·cm?2 - 1 mAh·cm?2. Furthermore, in Zn@LaCRF // Cu half-cell, the cycle life exceeded 800 cycles; meanwhile, in Zn@LaCRF∥MnO2 full cell, the capacity retention rate remains as high as 91.9 % after 2000 cycles at a current density of 1.8 A·g-1. This achievement not only provides a new solution for addressing the corrosion issues of zinc anodes but also paves a new direction for the application of rare earth elements in rechargeable aqueous zinc-ion batteries.

Key words: Aqueous zinc batteries, Zinc negative, Corrosion resistant film, Rare earth elements, Cycling performance

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