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中国腐蚀与防护学报    DOI: 10.11902/1005.4537.2026.162
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杏仁酸电解液添加剂抑制锌电池负极腐蚀行为的研究
冯锦汐, 廖展一, 刘丽, 董立谨, 黄韵
西南石油大学新能源与材料学院, 610500
Mandelic Acid as Electrolyte Additive for Zn Anode Corrosion Inhibition in Aqueous Zinc‑Ion Battery
Feng
, Southwest Petroleum University 610500,
引用本文:

冯锦汐, 廖展一, 刘丽, 董立谨, 黄韵. 杏仁酸电解液添加剂抑制锌电池负极腐蚀行为的研究[J]. 中国腐蚀与防护学报, 10.11902/1005.4537.2026.162.
Feng, , , , . Mandelic Acid as Electrolyte Additive for Zn Anode Corrosion Inhibition in Aqueous Zinc‑Ion Battery[J]. Journal of Chinese Society for Corrosion and protection, 0, (): 0-.

全文: PDF(1413 KB)  
摘要: 针对水系锌离子电池锌负极面临的析氢、枝晶生长等腐蚀问题,本文提出向硫酸锌电解液中添加微量杏仁酸(MA)以抑制锌负极的腐蚀。采用电化学测试及多种材料表征手段,研究了MA对电解液理化性质、锌沉积/溶出行为及电池电化学性能的影响。结果表明,MA分子所含的羧基使其自发吸附于锌负极表面,羟基参与调控Zn2+溶剂化环境,苯环骨架则提供疏水屏障以稳定界面,三者协同抑制了枝晶形成并缓解了副反应。当MA添加量为0.3 wt%时,Zn//Cu半电池的平均库仑效率高达99.82%;Zn//Zn对称电池在5 mA cm-2和1 mAh cm-2条件下展现出超过5000小时的循环寿命;Zn//V2O5全电池在5 A g-1下循环10000次后,容量保持率达71.12%。杏仁酸添加剂通过协同调控溶剂化结构与界面沉积行为,可显著提升锌负极的腐蚀防护能力和电池的长期循环稳定性。
关键词 : 锌离子电池,  锌负极,  电解液添加剂,  杏仁酸,  抑制腐蚀    
Abstract:To address the issue of corrosion of the zinc anode in aqueous zinc-ion batteries, including hydrogen evolution and dendrite growth, this study proposes the addition of a trace amount of mandelic acid (MA) to the ZnSO4 electrolyte in order to suppress zinc anode corrosion. The impact of MA on the physicochemical properties of the electrolyte, the Zn deposition/stripping behavior, and the electrochemical performance of the batteries was investigated using electrochemical measurements and materials characterization techniques. The results show that the carboxyl groups of MA molecules facilitate spontaneous adsorption onto the zinc anode surface. Meanwhile, the hydroxyl groups participate in regulating the Zn2+ solvation environment, and the benzene ring skeleton provides a hydrophobic barrier to stabilize the interface. The synergistic effect of these three functional components suppresses dendrite formation and mitigates parasitic reactions. With an optimal MA addition of 0.3 wt%, the Zn//Cu half-cell achieves a high average Coulombic efficiency of 99.82%; the Zn//Zn symmetric cell exhibits an outstanding cycle life exceeding 5000 hours at 5 mA cm-2 and 1 mAh cm-2; and the Zn//V2O5 full cell maintains a capacity retention of 71.12% after 10,000 cycles at 5 A g-1. Therefore, the MA additive significantly enhances the corrosion protection of the zinc anode and the long-term cycling stability of the battery by synergistically regulating the solvation structure and interfacial deposition behavior.
Key words: Aqueous zinc-ion batteries    Zinc anode    Electrolyte additive    Inhibition corrosion
收稿日期: 2026-05-25     
基金资助:国家自然科学基金(52170140); 四川省重点研发省校省院项目(2025YFHZ0057); 四川省大学生创新创业训练项目(S202510615230 和 S202510615299X); 西南石油大学开放实验项目(2024KSZ05030)
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