脯氨酸衍生物电解质添加剂对水系锌离子电池性能的影响

梁立鑫; 赵艳; 李天琛; 廖涛; 曹远奎; 刘彬

doi:10.19976/j.cnki.43-1448/TF.2025091

粉末冶金材料科学与工程 >

2026 , Vol. 31 >Issue 3: 236 - 244

DOI: https://doi.org/10.19976/j.cnki.43-1448/TF.2025091

工艺技术

脯氨酸衍生物电解质添加剂对水系锌离子电池性能的影响

梁立鑫 ,
赵艳 ,
李天琛 ,
廖涛 ,
曹远奎 ,
刘彬

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1.中南大学粉末冶金全国重点实验室,长沙 410083;
2.约翰·霍普金斯大学化学与生物分子工程系,巴尔的摩 21218

收稿日期: 2026-01-04

修回日期: 2026-03-17

网络出版日期: 2026-07-03

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Effect of proline derivative electrolyte additives on the performance of aqueous zinc-ion batteries

LIANG Lixin ,
ZHAO Yan ,
LI Tianchen ,
LIAO Tao ,
CAO Yuankui ,
LIU Bin

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1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;
2. Department of Chemical and Biomolecular Engineering, John Hopkins University, Baltimore 21218, USA

Received date: 2026-01-04

Revised date: 2026-03-17

Online published: 2026-07-03

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摘要

水系锌离子电池严重的日历老化与循环衰减问题制约着其产业化应用。本研究在电解液中引入4-氟基脯氨酸添加剂,采用浸泡腐蚀测试、对称/非对称电池循环及光谱表征,系统分析添加剂对电池性能的影响。结果表明：氟基氨基酸添加剂可显著缓冲pH变化,抑制锌枝晶与副产物生成,使Zn//Cu电池在多次静置-循环后库仑效率保持99.4%以上;Zn//Zn对称电池在1 mA/cm²和1 mAh/cm²下的循环寿命延长至770 h以上,约为对照组的6倍。氟基脯氨酸的两性离子基团参与质子调节并重构氢键网络,可提升界面润湿性与稳定性。本研究为开发高稳定性水系锌电池提供了一种有效的电解液调控策略。

关键词： 水系电池; 锌离子; 电解质添加剂; 日历老化; 循环性能; 脯氨酸衍生物

本文引用格式

梁立鑫 , 赵艳 , 李天琛 , 廖涛 , 曹远奎 , 刘彬 . 脯氨酸衍生物电解质添加剂对水系锌离子电池性能的影响[J]. 粉末冶金材料科学与工程, 2026 , 31(3) : 236 -244 . DOI: 10.19976/j.cnki.43-1448/TF.2025091

Abstract

The serious calendar aging and cyclic attenuation of aqueous zinc-ion batteries restrict its industrial application. In this study, 4-fluoroproline additive was introduced into the electrolyte. The effects of additives on battery performance were systematically analyzed by immersion corrosion test, symmetric/asymmetric battery cycle and spectral characterization. The results show that the fluoroproline additive can significantly buffer the pH change, inhibit the formation of zinc dendrites and by-products, and remain the coulombic efficiency of Zn//Cu battery above 99.4% after multiple standing-cycle. The cycle life of Zn//Zn symmetrical battery at 1 mA/cm² and 1 mAh/cm² is prdonged to more than 770 h, which is about 6 times that of the control group. The zwitterionic groups of fluoroproline participate in proton regulation and reconstruct the hydrogen bond network, which can improve the wettability and stability of the interface. This study provides an effective electrolyte regulation strategy for the development of high-stability aqueous zinc batteries.

Key words： aqueous battery; Zn-ion; electrolyte additive; calendar aging; cycling performance; proline derivative

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