化工学报 ›› 2020, Vol. 71 ›› Issue (6): 2457-2465.DOI: 10.11949/0438-1157.20191530

• 综述与专论 • 上一篇    下一篇

超级电容器用solvent-in-salt型电解液的研究进展

杨乐1(),余金河1,付蓉1,谢远洋1,于畅1(),邱介山2()   

  1. 1.大连理工大学化工学院,精细化工国家重点实验室,辽宁省能源材料化工重点实验室,辽宁 大连 116024
    2.北京化工大学化学工程学院,北京 100029
  • 收稿日期:2019-12-17 修回日期:2020-01-17 出版日期:2020-06-05 发布日期:2020-06-05
  • 通讯作者: 于畅,邱介山
  • 作者简介:杨乐(1995—),男,硕士研究生,le_yangl@163.com
  • 基金资助:
    国家自然科学基金项目(51872035);中央高校基本科研业务专项资金(DUT19LAB20)

Research progress of solvent-in-salt electrolyte for supercapacitor

Le YANG1(),Jinhe YU1,Rong FU1,Yuanyang XIE1,Chang YU1(),Jieshan QIU2()   

  1. 1.State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Energy Materials and Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
    2.School of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2019-12-17 Revised:2020-01-17 Online:2020-06-05 Published:2020-06-05
  • Contact: Chang YU,Jieshan QIU

摘要:

Solvent-in-salt (SIS)型电解液作为一类新型超浓缩电解液,主要由水或者有机溶剂和易溶盐组成,具有溶液溶剂化程度小、自由溶剂分子少、电化学窗口宽、电化学稳定性高等特点,在超级电容器中显示了独特的优势并展现了良好的应用前景。本文重点综述了SIS型电解液的原理和优势,梳理了近年来SIS作为超级电容器电解液的研究进展,总结了其存在的问题,同时展望了SIS型电解液未来的发展方向。

关键词: 超级电容器, solvent-in-salt型电解液, 电压窗口, 稳定性, 溶剂化

Abstract:

Solvent-in-salt(SIS), as a new type of electrolyte, is highly concerned, where the electrolyte ions and solvent form a special solvated structure to passivate solvent and further inhibit solvent decomposition/polarization as well as reduce its reactivity. Benefiting from these characteristics including well electrochemical stability, wide work voltage window, SIS features unique and superior merits in supercapacitor, offering prospects of unprecedented advances in device performance. This article focuses on the principles and advantages of SIS-type electrolytes, combs the research progress of SIS as an electrolyte for supercapacitors in recent years, summarizes its existing problems, and looks forward to the future development direction of SIS-type electrolyte.

Key words: supercapacitor, solvent-in-salt electrolytes, voltage window, stability, solvation

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