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Materials Science and Engineering of Powder Metallurgy >

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

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

Engineering and Technology

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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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

Cite this article

LIANG Lixin , ZHAO Yan , LI Tianchen , LIAO Tao , CAO Yuankui , LIU Bin . Effect of proline derivative electrolyte additives on the performance of aqueous zinc-ion batteries[J]. Materials Science and Engineering of Powder Metallurgy, 2026 , 31(3) : 236 -244 . DOI: 10.19976/j.cnki.43-1448/TF.2025091

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