[1]彭 斌,李 琴*,严智元,等.doi: 10.3969/j.issn.1001-3849.2025.07.009锌表面修饰及电化学性能研究[J].电镀与精饰,2025,(07):54-58.
　Peng Bin,Li Qin*,Yan Zhiyuan,et al.Study on surface modification and electrochemical performance of zinc metal[J].Plating & Finishing,2025,(07):54-58.
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doi: 10.3969/j.issn.1001-3849.2025.07.009锌表面修饰及电化学性能研究()

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2025年07
页码:
54-58
栏目:
出版日期:
2025-07-31

文章信息/Info

Title:
Study on surface modification and electrochemical performance of zinc metal
作者:
彭 斌; 李 琴*; 严智元; 牛志高; 段 凯; 刘牵奇
(南昌航空大学 材料科学与工程学院,江西 南昌 330063)
Author(s):
Peng Bin;  Li Qin*;  Yan Zhiyuan;  Niu Zhigao;  Duan Kai;  Liu Qianqi
(School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China)
关键词:
锌负极; 化学浸渍; 表面修饰; 电化学性能
Keywords:
zinc negative electrode;  chemical impregnation;  surface modification;  electrochemical performance
分类号:
TQ317
文献标志码:
A
摘要:
水系锌离子电池具备本质安全，成本低廉、环境友好等优势，成为最具竞争力的电化学储能体系，但因锌负极的可逆性差，且存在枝晶、形变、钝化、析氢腐蚀等问题，大大降低了电池的循环寿命，严重制约了其发展。为改善锌负极表面，通过简易的化学浸渍法将锌在含有铁氰化钾、铁氰化钾+聚乙烯醇(PVA)、有机磷、有机磷+钼酸钠、有机锆等溶液中，构建不同的锌自组装膜层。通过Tafel曲线、电化学阻抗谱测试膜层电化学性能，通过静态接触角测试比较膜层对硫酸锌电解液的浸润性。Tafel结果表明膜层的腐蚀电流均小于纯锌的腐蚀电流，其中有机磷+钼酸钠膜层腐蚀速度最小，有效的改善锌负极的界面腐蚀行为，提高了其耐蚀性。电化学阻抗谱测试结果表明铁氰化钾膜层、铁氰化钾+聚乙烯醇膜层、有机磷+钼酸钠膜层、有机锆膜层的电荷转移电阻小于纯锌的电荷转移电阻，有利于锌离子的传输与均匀分布，抑制副反应的产生。静态接触角测试结果表明膜层提高了锌片在硫酸锌溶液中的浸润性，有利于锌离子传输。
Abstract:
The advantages of Aqueous Zinc-ion Batteries are intrinsically safe, low cost and environmental friendliness, so that it has become the most competitive electrochemical energy storage system, but due to the poor reversibility of the zinc negative electrode, and the existence of dendrite growth, deformation, passivation, hydrogen evolution corrosion and other problems, the cycle life of the battery is greatly reduced, seriously restricting its development. To improve the surface of the negative zinc electrode, different zinc self-assembly films were constructed by simple chemical impregnation method of zinc in solution containing K3[Fe(CN)6], K3[Fe(CN)6]+PVA, organic phosphine+sodium molybdate, organic zirconium, organic phosphine, etc. The electrochemical properties of the film were measured by Tafel curve and electrochemical impedance spectroscopy, and the wettability of the film to zinc sulfate electrolyte was compared by static contact Angle test. The results of Tafel show that the corrosion current of the film is lower than that of pure zinc, and the corrosion rate of the organophosphorus +sodium molybdate film is the smallest, which effectively improves the interface corrosion behavior of the negative zinc electrode and improves its corrosion resistance. Electrochemical impedance spectroscopy test results show that the charge transfer resistance of potassium K 3[Fe(CN)6] film, K3[Fe(CN)6]+PVA film, organophosphorus+sodium molybdate film and organozirconium film is smaller than that of pure zinc, which is conducive to the transport and uniform distribution of zinc ions and inhibits the generation of side reactions. The static contact Angle test results show that the film layer improves the wettability of zinc sheet in zinc sulfate solution, which is conducive to zinc ion transport.

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更新日期/Last Update: 2025-07-08