储能科学与技术2026，Vol.15Issue(8)：3033-3041,9.DOI:10.19799/j.cnki.2095-4239.2026.0291
水系锌碘电池聚合物电解液制备及其电化学性能研究
Preparation and electrochemical performance of an aqueous polymer electrolyte for highly stable zinc-ion batteries
摘要
Abstract
The electrochemical stability of zinc anodes in aqueous zinc-ion batteries is severely limited by hydrogen evolution,corrosion,and dendrite growth,posing major challenges for long-term cycling and high-rate applications.In this study,a novel macromolecular polymer-based electrolyte salt system(MS electrolyte)was designed to regulate both the electrolyte microstructure and zinc anode interface through the abundant functional groups and long-chain conformation of the polymer chains.Successful polymer synthesis was confirmed by 1H NMR and FTIR spectroscopy.The MSE was then prepared by dissolving the polymer in deionized water,with a conventional 1 mol/L ZnSO4 aqueous solution used as the control.Electrochemical tests demonstrated that the MSE significantly suppresses interfacial side reactions and dendrite growth at the zinc anode:Zn-Zn symmetric cells yielded a 600 h cycle life at 1 mA/cm2/1 mA/cm2 and maintained stable cycling for 90 h even under harsh conditions(10 mA/cm2/10 mA/cm2).Zn-Cu asymmetric cells delivered an average Coulombic efficiency of 99.3%over 300 cycles.Furthermore,Zn-I2 cells gave a capacity retention of 86.1%after 1000 cycles at a current density of 1 A/g.Post-cycling characterization,further confirmed that the MSE suppressed interfacial corrosion and side reactions.This work provides an effective strategy for developing aqueous zinc-ion electrolytes that combine low water activity,high ionic transport capability,and superior interfacial stability,offering valuable insights for the design of high-performance aqueous zinc-ion batteries.关键词
水系锌离子电池/锌金属负极/电解液/盐/添加剂Key words
aqueous zinc-ion batteries/zinc metal anodes/electrolyte/salt/additive分类
信息技术与安全科学引用本文复制引用
胡宗丽,杨光,史晓东,王欣..水系锌碘电池聚合物电解液制备及其电化学性能研究[J].储能科学与技术,2026,15(8):3033-3041,9.基金项目
国家自然科学基金面上项目(22479102),广东省基础与应用基础研究基金(2025A1515011798,2024A1515011716,2023B1515120042). （22479102）
