摘要
电解液是电池的重要组成之一。局部高浓度电解液(LHCE)作为一种新型的电解液,兼具高浓度电解液宽电位窗口、高安全性与低浓度电解液低黏度、高离子电导率和低成本等优点。LHCE主要应用在锂金属和锂离子电池中,近年来,LHCE也逐步应用于钾/钠离子电池体系。首先介绍了局部高浓度电解液的组成、基本性质及稀释组分种类,进一步总结了LHCE在钠基电池和钾离子电池中的最新研究进展,重点介绍了LHCE的设计原理及对电池电化学性能的影响和提升机制。最后,展望了局部高浓度电解液当前存在的挑战和未来前景。
Electrolyte is one of the important components of rechargeable batteries.As a new type of electrolyte,localized high-concentration electrolyte(LHCE)exhibits the advantages of wide electrochemical stable potential window,high safety of high concentration electrolyte as well as low viscosity,high ionic conductivity and economy of low concentration electrolyte.LHCE has been widely applied in lithium metal and lithium-ion batteries.Recently,there are reports of localized high-concentration electrolytes in sodium-ion and potassium-ion batteries.Herein,the focus is on composition,properties and diluents of localized high concentration electrolytes,particularly summarizing the progress on use of LHCE in sodium based and potassium-ion batteries,electrolyte design principle,influence on electrochemical performance and mechanism.Finally,challenges and trends for practical application of localized high concentration electrolytes are presented based on recent reports.
作者
曲文会
常立民
聂平
QU Wenhui;CHANG Limin;NIE Ping(College of Chemistry,Jilin Normal University,Siping 136000,Jilin,China;Key Laboratory of Preparation and Applications of Environmental Friendly Materials of the Ministry of Education,Jilin Normal University,Changchun 130103,Jilin,China)
出处
《金属功能材料》
CAS
2023年第4期27-34,共8页
Metallic Functional Materials
基金
国家自然科学基金(52072145)
吉林省科技发展计划项目(20230508046RC)。
关键词
局部高浓度
电解液
钠离子电池
钾离子电池
localized high-concentration
electrolytes
sodium-ion batteries
potassium-ion batteries
作者简介
曲文会(1998-),女,硕士生,E-mail:2915688271@qq.com;通讯作者:常立民(1966-),男,博士,教授,E-mail:aaaa2139@163.com;通讯作者:聂平(1985-),男,博士,副教授,E-mail:pingnie@jlnu.edu.cn。
