{"title":"一种多功能电解质添加剂,使锌离子水电池中的锌阳极具有高度可逆性","authors":"","doi":"10.1016/j.est.2024.114123","DOIUrl":null,"url":null,"abstract":"<div><div>Aqueous zinc-ion batteries (AZIBs) have a great application prospect in large-scale energy storage, but rampant dendrite growth and continuous side reactions cause the deterioration of zinc electrode performance. Herein, a distinctive additive, sodium p-toluene sulfonate (STS) is shown to enable stable and reversible zinc deposition. Both density functional theory (DFT) calculation and experimental observation demonstrate that STS additive not only can modulate solvation structure to reduce the number of active water molecules, but also is preferentially adsorbed on the Zn(101) plane and guide the preferentially growth of the Zn(002) plane. Moreover, the water-poor electric double layer (EDL) formed on the Zn anode and the reduction of pH value of the electrolyte caused by STS have a positive effect on the inhibition of side reactions. Moreover, the formation of hydrophobic layer and the regulation of pH have a positive effect on the inhibition of side reactions. Consequently, the cycle life of corresponding Zn//Zn symmetric battery with STS additive can reach up to 3500 h at 1 mA cm<sup>−2</sup> /1 mAh cm<sup>−2</sup>, and >900 h at 5 mA cm<sup>−2</sup> /5 mAh cm<sup>−2</sup>. Moreover, the STS additive endows the Zn//MnO<sub>2</sub> full cell to achieve an excellent capacity retention rate of 78 % over 800 cycles at 1 A g<sup>−1</sup>.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":null,"pages":null},"PeriodicalIF":8.9000,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A versatile electrolyte additive enabling highly reversible Zn anode in aqueous zinc-ion batteries\",\"authors\":\"\",\"doi\":\"10.1016/j.est.2024.114123\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Aqueous zinc-ion batteries (AZIBs) have a great application prospect in large-scale energy storage, but rampant dendrite growth and continuous side reactions cause the deterioration of zinc electrode performance. Herein, a distinctive additive, sodium p-toluene sulfonate (STS) is shown to enable stable and reversible zinc deposition. Both density functional theory (DFT) calculation and experimental observation demonstrate that STS additive not only can modulate solvation structure to reduce the number of active water molecules, but also is preferentially adsorbed on the Zn(101) plane and guide the preferentially growth of the Zn(002) plane. Moreover, the water-poor electric double layer (EDL) formed on the Zn anode and the reduction of pH value of the electrolyte caused by STS have a positive effect on the inhibition of side reactions. Moreover, the formation of hydrophobic layer and the regulation of pH have a positive effect on the inhibition of side reactions. Consequently, the cycle life of corresponding Zn//Zn symmetric battery with STS additive can reach up to 3500 h at 1 mA cm<sup>−2</sup> /1 mAh cm<sup>−2</sup>, and >900 h at 5 mA cm<sup>−2</sup> /5 mAh cm<sup>−2</sup>. Moreover, the STS additive endows the Zn//MnO<sub>2</sub> full cell to achieve an excellent capacity retention rate of 78 % over 800 cycles at 1 A g<sup>−1</sup>.</div></div>\",\"PeriodicalId\":15942,\"journal\":{\"name\":\"Journal of energy storage\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.9000,\"publicationDate\":\"2024-10-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of energy storage\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2352152X24037095\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of energy storage","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352152X24037095","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
摘要
水溶液锌离子电池(AZIBs)在大规模储能方面具有广阔的应用前景,但枝晶的大量生长和持续的副反应会导致锌电极性能下降。在本文中,一种独特的添加剂对甲苯磺酸钠(STS)可实现稳定、可逆的锌沉积。密度泛函理论(DFT)计算和实验观察均表明,STS 添加剂不仅能调节溶解结构以减少活性水分子的数量,而且能优先吸附在 Zn(101) 平面上,并引导 Zn(002) 平面优先生长。此外,STS 在锌阳极上形成的贫水双电层(EDL)和电解液 pH 值的降低对抑制副反应也有积极作用。此外,疏水层的形成和 pH 值的调节对抑制副反应也有积极作用。因此,使用 STS 添加剂的相应锌/锌对称电池在 1 mA cm-2 /1 mAh cm-2 条件下的循环寿命可达 3500 h,在 5 mA cm-2 /5 mAh cm-2 条件下的循环寿命可达 900 h。此外,STS添加剂还使Zn//MnO2全电池在1 A g-1条件下循环800次后,容量保持率达到78%。
A versatile electrolyte additive enabling highly reversible Zn anode in aqueous zinc-ion batteries
Aqueous zinc-ion batteries (AZIBs) have a great application prospect in large-scale energy storage, but rampant dendrite growth and continuous side reactions cause the deterioration of zinc electrode performance. Herein, a distinctive additive, sodium p-toluene sulfonate (STS) is shown to enable stable and reversible zinc deposition. Both density functional theory (DFT) calculation and experimental observation demonstrate that STS additive not only can modulate solvation structure to reduce the number of active water molecules, but also is preferentially adsorbed on the Zn(101) plane and guide the preferentially growth of the Zn(002) plane. Moreover, the water-poor electric double layer (EDL) formed on the Zn anode and the reduction of pH value of the electrolyte caused by STS have a positive effect on the inhibition of side reactions. Moreover, the formation of hydrophobic layer and the regulation of pH have a positive effect on the inhibition of side reactions. Consequently, the cycle life of corresponding Zn//Zn symmetric battery with STS additive can reach up to 3500 h at 1 mA cm−2 /1 mAh cm−2, and >900 h at 5 mA cm−2 /5 mAh cm−2. Moreover, the STS additive endows the Zn//MnO2 full cell to achieve an excellent capacity retention rate of 78 % over 800 cycles at 1 A g−1.
期刊介绍:
Journal of energy storage focusses on all aspects of energy storage, in particular systems integration, electric grid integration, modelling and analysis, novel energy storage technologies, sizing and management strategies, business models for operation of storage systems and energy storage developments worldwide.