Energy Storage Science and Technology ›› 2022, Vol. 11 ›› Issue (4): 1226-1235.doi: 10.19799/j.cnki.2095-4239.2022.0038

• Special issue of International Outstanding Young Scientists for Energy Storage • Previous Articles     Next Articles

Advances in conducting lithium salts for solid polymer electrolytes

Xingxing WANG1(), Ziyu SONG1, Hao WU1, Wenfang FENG1, Zhibin ZHOU1, Heng ZHANG1,2()   

  1. 1.Key Laboratory of Material Chemistry for Energy Conversion and Storage, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China
    2.Centre for Cooperative Research on Alternative Energies (CIC EnergiGUNE), Vitoria-Gasteiz 01510, Alava, Spain
  • Received:2022-01-19 Revised:2022-02-17 Online:2022-04-05 Published:2022-04-11
  • Contact: Heng ZHANG E-mail:2457609075@qq.com;hengzhang2020@hust.edu.cn

Abstract:

Solid polymer electrolytes (SPEs) has several distinct advantages, including no-leakage, ease of use, and suppression of lithium dendrite growth, all of which are important for improving the cycling life and safety of solid-state lithium metal batteries. Conducting lithium salts, as one of the most essential components of SPEs, could not only act as lithium-ion sources for the transportation of ionic species but also participate in the formation/construction of electrode/SPEs interphases. As a result, the chemical structures of lithium salts are critical for regulating the physical and electrochemical properties of SPEs, as well as their interfacial properties with electrode materials. This work focuses mainly on the research progress of conducting lithium salts, including perfluorinated and partially fluorinated sulfonimide salts, based on our experience in the field of SPEs. Future directions in conducting salt design for SPEs are also discussed.

Key words: solid-state lithium metal batteries, solid polymer electrolytes, conducting lithium salts, sulfonimide

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