Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (5): 20220670.doi: 10.7503/cjcu20220670

• Review • Previous Articles     Next Articles

Research Progresses of in situ Polymerized Electrolytes for Solid-state Lithium Metal Batteries

XU Pan1, KONG Weijin1, HUANG Xueyan1, SUN Shuo1, HUANG Wenze1, ZHAO Chenzi1,2()   

  1. 1.Department of Chemical Engineering
    2.School of Vehicle and Mobility,Tsinghua University,Beijing 100084,China
  • Received:2022-10-14 Online:2023-05-10 Published:2022-11-29
  • Contact: ZHAO Chenzi E-mail:zcz@mail.tsinghua.edu.cn
  • Supported by:
    the National Key Research and Development Program of China(2021YFB2500300)

Abstract:

In the next-generation battery systems, solid-state lithium metal batteries possesses high energy density, which are also expected to avoid the potential safety issues such as combustion and explosion faced by current commercial batteries. However, the poor solid-solid contacts between solid-state electrolytes and electrodes are crucial challenges to hinder their practical applications. In recent years, the in situ polymerized electrolytes prepared by the in situ polymerization reactions inside the battery have multiple advantages for solid-state lithium metal batteries, including improved solid-solid interface compatibility via interface integration, Li dendrite suppression, inhibited dissolution/shuttle of cathode transition metal ions/polysulfides/redox mediators and enhanced electro- chemical performances. This review firstly discusses the reaction mechanism of polymerized electrolytes, and then analyzes the state-of-the-art in situ polymerized electrolytes. Furthermore, the recent research progresses of in situ polymerized electrolytes in solid-state lithium metal batteries is summarized, emphasizing the important roles in the battery cycling. Finally, the conclusion and future prospects on the commercial application of in situ polymerized electrolytes are presented.

Key words: Solid-state lithium metal battery, In situ polymerization, Solid-state electrolyte, Solid-solid interface

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