摘要
随着对大型储能电池的需求逐渐增加,钠离子电池由于其资源丰富,价格低廉且与锂性质相似等优点而被广泛关注。在钠离子电池的关键材料选择中,钠离子电池的电化学性能和安全性同时受电解液的影响,这不仅决定了电池的电化学窗口和能量密度,而且还控制着电极/电解液界面的性质。本文首先综述了钠离子电池电解质的基本要求、主要分类,重点讨论了对钠离子电池电解质的选择性要求及不同钠盐的物化性能和对固体电解质界面的影响;其次针对不同溶剂和材料的兼容性以及材料在不同溶剂体系中的储能机制等,分别对材料在醚类和酯类电解液中获得的固体电解质界面特点、倍率性能、循环性能等展开分析。最后指出钠离子电池电解质未来在与材料的匹配、关键性表征方法等方面的发展路线。
As the demand for large-scale batteries for electrical energy storage is increasing, sodium-ion batteries have attracted a lot of attention due to the abundance,cost-effectiveness of sodium resources and resemblance with lithium. In the key material selection of sodium ion battery, electrochemical performance and safety of a sodium-ion battery were affected by the electrolyte, which not only decides the electrochemical window and energy density, but also controls the electrode/electrolyte interfaces. In this paper, the basic requirements and classification of electrolyte of sodium ion battery were reviewed. The selective requirements of electrolyte in sodium ion batteries, the physicochemical properties of different sodium salts and the effects on solid electrolyte interface were discussed. Based on the compatibility of different solvents and materials as well as the energy storage mechanism of materials in different solvent systems, the solid electrolyte interface, rate and cycling performance obtained by materials in ether and ester based electrolytes were analyzed. Finally, the future development of sodium ion battery electrolyte in terms of matching with materials and key characterization methods were prospected.
作者
张福明
王静
张鹏
时志强
ZHANG Fu-ming;WANG Jing;ZHANG Peng;SHI Zhi-qiang(School of Materials Science and Engineering,Tiangong University,Tianjin 300387,China;Tianjin Key Laboratory of Advanced Fiber and Energy Storage Technology,Tianjin 300387,China)
出处
《材料工程》
EI
CAS
CSCD
北大核心
2021年第1期11-22,共12页
Journal of Materials Engineering
基金
国家自然科学基金(51603147)
天津市科技支撑计划重点项目(15ZCZDGX00270)
天津市人才引进与科技合作计划863成果转化项目(14RCHZGX00859)。
关键词
钠离子电池
有机电解液
醚基电解液
酯基电解液
固体电解质界面
sodium ion battery
organic electrolyte
ether-based electrolyte
ester-based electrolyte
solid electrolyte interphase
