Energy band-engineered solid electrolyte interphase for stable potassium-ion batteries

IF 38.6 1区 材料科学 Q1 CHEMISTRY, PHYSICAL
Joule Pub Date : 2025-06-18 DOI:10.1016/j.joule.2025.101952
Xuemei Ma , Dianwei Zhang , Hongwei Fu , Apparao M. Rao , Jiang Zhou , Ling Fan , Bingan Lu
{"title":"Energy band-engineered solid electrolyte interphase for stable potassium-ion batteries","authors":"Xuemei Ma ,&nbsp;Dianwei Zhang ,&nbsp;Hongwei Fu ,&nbsp;Apparao M. Rao ,&nbsp;Jiang Zhou ,&nbsp;Ling Fan ,&nbsp;Bingan Lu","doi":"10.1016/j.joule.2025.101952","DOIUrl":null,"url":null,"abstract":"<div><div>The solid electrolyte interphase (SEI) critically governs the performance of potassium-ion batteries (PIBs). However, present-day SEIs cannot prevent persistent parasitic reactions between the electrode and electrolyte due to SEI’s low energy band gap and high ion migration energy barrier. Here, we propose an SEI energy band engineering strategy by screening the band-gap width and migration energy barrier of various SEI components, and we found that the Si-O-SEI simultaneously increases SEI’s energy band gap and lowers the ion migration energy barrier to enable good electron-blocking capability and high K<sup>+</sup> ion diffusion. Our Si-O-SEI prepared <em>in situ</em> on the electrode surface, using a simple additive, enables carbonate-based electrolytes to achieve a highly reversible potassium plating and stripping with a Coulombic efficiency (CE) of 99.2%, together with the upgraded reversibility of the graphite anode. SEI composition and structural modulation through a simple and generic strategy provide a valuable research platform for developing high-performance PIB electrolytes.</div></div>","PeriodicalId":343,"journal":{"name":"Joule","volume":"9 6","pages":"Article 101952"},"PeriodicalIF":38.6000,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Joule","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2542435125001333","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0

Abstract

The solid electrolyte interphase (SEI) critically governs the performance of potassium-ion batteries (PIBs). However, present-day SEIs cannot prevent persistent parasitic reactions between the electrode and electrolyte due to SEI’s low energy band gap and high ion migration energy barrier. Here, we propose an SEI energy band engineering strategy by screening the band-gap width and migration energy barrier of various SEI components, and we found that the Si-O-SEI simultaneously increases SEI’s energy band gap and lowers the ion migration energy barrier to enable good electron-blocking capability and high K+ ion diffusion. Our Si-O-SEI prepared in situ on the electrode surface, using a simple additive, enables carbonate-based electrolytes to achieve a highly reversible potassium plating and stripping with a Coulombic efficiency (CE) of 99.2%, together with the upgraded reversibility of the graphite anode. SEI composition and structural modulation through a simple and generic strategy provide a valuable research platform for developing high-performance PIB electrolytes.

Abstract Image

Abstract Image

用于稳定钾离子电池的能带工程固体电解质界面
固体电解质界面(SEI)对钾离子电池(PIBs)的性能起着至关重要的作用。然而,由于SEI的低能带隙和高离子迁移能垒,目前的SEI不能阻止电极和电解质之间持续的寄生反应。本文通过筛选各种SEI组分的带隙宽度和迁移能垒,提出了SEI能带工程策略,发现Si-O-SEI同时增加了SEI的能带隙,降低了离子迁移能垒,从而获得了良好的电子阻挡能力和高K+离子扩散能力。我们在电极表面原位制备了Si-O-SEI,使用一种简单的添加剂,使碳酸盐基电解质能够实现高可逆的镀钾和剥离,库伦效率(CE)达到99.2%,同时石墨阳极的可逆性也得到了提升。通过简单和通用的策略进行SEI组成和结构调制,为开发高性能PIB电解质提供了有价值的研究平台。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Joule
Joule Energy-General Energy
CiteScore
53.10
自引率
2.00%
发文量
198
期刊介绍: Joule is a sister journal to Cell that focuses on research, analysis, and ideas related to sustainable energy. It aims to address the global challenge of the need for more sustainable energy solutions. Joule is a forward-looking journal that bridges disciplines and scales of energy research. It connects researchers and analysts working on scientific, technical, economic, policy, and social challenges related to sustainable energy. The journal covers a wide range of energy research, from fundamental laboratory studies on energy conversion and storage to global-level analysis. Joule aims to highlight and amplify the implications, challenges, and opportunities of novel energy research for different groups in the field.
×
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:604180095
Book学术官方微信