摘要
水系锌离子电池(AZIBs)因低成本、高安全性、高理论比容量(820mAh·g^(-1))等优势,逐渐成为研究热点。但AZIBs面临循环性能衰退和存在副反应等问题,严重限制了AZIBs的寿命以及商业化应用前景。近年来针对AZIBs电解液添加剂的特性和作用机制的研究缺乏深入探讨。本文采用AM和UPYMA这2种单体,经聚合交联反应制备了一种新型的双单体水凝胶AM-UPYMA。AM-UPYMA电解质对析氧反应(OER)具有抑制作用,可有效减少由析氧反应导致的能量损耗和副反应。同时,AM-UPYMA电解质可显著降低锌负极的腐蚀程度,极大提升锌负极的稳定性。研究结果显示,以AM-UPYMA作为电解质时,电池表现出很好的循环稳定性。用该电解质组装的Zn‖Zn对称电池,在电流密度为1mA·cm^(-2)、容量密度为1mAh·cm^(-2)的严苛条件下,能够稳定循环长达4000h,充分显示出AM-UPYMA电解质在电池领域的巨大应用潜力。
Aqueous zinc-ion batteries(AZIBs)have increasingly become a research hotspot due to their advantages such as low cost,high safety,and high theoretical specific capacity(820mAh/g).However,AZIBs face critical challenges,including cycling performance degradation and side reactions,which severely limit their lifespan and commercialization.In recent years,there has been a lack of in-depth exploration of the characteristics and mechanisms of electrolyte additives for AZIBs.In this study,constructed through polymerization and crosslinking reactions between the two monomers AM and UPYMA,a novel dual-monomer hydrogel AM-UPYMA was prepared.The AM-UPYMA electrolyte effectively suppresses the oxygen evolution reaction(OER),significantly reducing energy loss and side reactions caused by OER.Additionally,it substantially decreases the corrosion of the zinc anode,greatly enhancing its stability.In-depth research results demonstrate that when AM-UPYMA is used as the electrolyte,the battery exhibits extraordinary cycling stability.A Zn‖Zn symmetric battery assembled with this electrolyte can operate stably for up to 4000h under stringent conditions of a current density of 1mA/cm2 and an areal capacity of 1mAh/cm^(2),fully showcasing the immense application potential of AM-UPYMA electrolytes in the battery field.
作者
张昕睿
ZHANG Xinrui(College of Chemistry and Materials Engineering,Wenzhou University,Wenzhou 325035,China)
出处
《化工技术与开发》
2025年第8期34-38,66,共6页
Technology & Development of Chemical Industry
关键词
水系锌离子电池
水凝胶电解质
析氧反应抑制
aqueous zinc-ion battery
hydrogel electrolyte
oxygen evolution reaction suppression
