IF 3.4 3区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Weihao Xu, Xipo Ma, Pengbo Lyu, Zhenren Gao, Chunshuang Yan and Chade Lv
{"title":"Sugar additive with a halogen group enabling a highly reversible and dendrite-free Zn anode†","authors":"Weihao Xu, Xipo Ma, Pengbo Lyu, Zhenren Gao, Chunshuang Yan and Chade Lv","doi":"10.1039/D4RE00366G","DOIUrl":null,"url":null,"abstract":"<p >Aqueous zinc-ion batteries (AZBs) suffer from poor reversibility and limited lifespan due to parasitic side reactions and dendrite growth induced by active water. Although additives are widely used to address these issues by reducing the water content within the Zn-ion solvation sheaths, the strong interaction between the additives and Zn<small><sup>2+</sup></small> causes poor de-solvation kinetics. Here, we propose a strategy that introduces an electron-withdrawing halogen group to reduce the polarity of the sugar additive. Theoretical simulations and experimental results demonstrate that a sucralose additive with optimal polarity can decrease the coordinated active water without hindering the de-solvation kinetics of Zn<small><sup>2+</sup></small>. This effectively regulates the overpotential and inhibits side reactions. Meanwhile, the additive can adsorb onto the surface of the Zn metal to modify the direction of zinc deposition and suppress dendrite growth. As a result, the Zn//Zn symmetric cell with the sucralose electrolyte additive exhibits an outstanding cycling life of 2400 h at a current density of 1 mA cm<small><sup>−2</sup></small>. Moreover, when coupled with the V<small><sub>2</sub></small>O<small><sub>5</sub></small> cathode, the full battery also demonstrates excellent operational stability, achieving 4000 cycles with a retained capacity of 51.84%.</p>","PeriodicalId":101,"journal":{"name":"Reaction Chemistry & Engineering","volume":" 1","pages":" 214-223"},"PeriodicalIF":3.4000,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reaction Chemistry & Engineering","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/re/d4re00366g","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

摘要

由于活性水诱发寄生副反应和枝晶生长,水性锌离子电池(AZBs)存在可逆性差和寿命有限的问题。虽然添加剂被广泛用于通过降低锌离子溶解鞘内的水含量来解决这些问题,但添加剂与 Zn2+ 之间的强相互作用会导致较差的去溶解动力学。在此,我们提出了一种策略,即引入一个具有电子吸附性的卤素基团来降低糖添加剂的极性。理论模拟和实验结果表明,具有最佳极性的三氯蔗糖添加剂可以减少配位活性水,而不会阻碍 Zn2+ 的脱溶动力学。这有效地调节了过电位并抑制了副反应。同时,添加剂还能吸附在金属锌表面,改变锌的沉积方向,抑制枝晶的生长。因此,使用蔗糖素(三氯蔗糖)电解质添加剂的锌/锌对称电池在电流密度为 1 mA cm-2 的条件下可达到 2400 小时的出色循环寿命。此外,当与 V2O5 阴极配合使用时,整个电池还表现出卓越的运行稳定性,循环次数达到 4000 次,容量保持率为 51.84%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Sugar additive with a halogen group enabling a highly reversible and dendrite-free Zn anode†

Sugar additive with a halogen group enabling a highly reversible and dendrite-free Zn anode†

Aqueous zinc-ion batteries (AZBs) suffer from poor reversibility and limited lifespan due to parasitic side reactions and dendrite growth induced by active water. Although additives are widely used to address these issues by reducing the water content within the Zn-ion solvation sheaths, the strong interaction between the additives and Zn2+ causes poor de-solvation kinetics. Here, we propose a strategy that introduces an electron-withdrawing halogen group to reduce the polarity of the sugar additive. Theoretical simulations and experimental results demonstrate that a sucralose additive with optimal polarity can decrease the coordinated active water without hindering the de-solvation kinetics of Zn2+. This effectively regulates the overpotential and inhibits side reactions. Meanwhile, the additive can adsorb onto the surface of the Zn metal to modify the direction of zinc deposition and suppress dendrite growth. As a result, the Zn//Zn symmetric cell with the sucralose electrolyte additive exhibits an outstanding cycling life of 2400 h at a current density of 1 mA cm−2. Moreover, when coupled with the V2O5 cathode, the full battery also demonstrates excellent operational stability, achieving 4000 cycles with a retained capacity of 51.84%.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Reaction Chemistry & Engineering
Reaction Chemistry & Engineering Chemistry-Chemistry (miscellaneous)
CiteScore
6.60
自引率
7.70%
发文量
227
期刊介绍: Reaction Chemistry & Engineering is a new journal reporting cutting edge research into all aspects of making molecules for the benefit of fundamental research, applied processes and wider society. From fundamental, molecular-level chemistry to large scale chemical production, Reaction Chemistry & Engineering brings together communities of chemists and chemical engineers working to ensure the crucial role of reaction chemistry in today’s world.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信