Application progress of in-situ technology in polymer solid electrolytes

Abstract

Polymer solid electrolytes have advantages such as high safety， large flexibility， rich variety and low price， laying the foundation for the industrialization of high energy density lithium metal batteries. However， due to the limitations of interface and other problems， the electrochemical performance of polymer solid electrolytes is still poor. In recent years， the in-situ technology has received more and more attention in the field of electrolyte research and development. In-situ technology represented by in-situ polymerization and in-situ characterization has greatly promoted the research of polymer solid electrolytes. In-situ polymerization improves the electrochemical performance of batteries by optimizing electrode and electrolyte interface， and in-situ characterization can explore the electrochemical mechanism inside battery without damage. The historical development of polymer solid electrolytes and in-situ technology was reviewed in this paper. The development and application of in-situ polymerization in various types of polymer solid electrolytes in recent years were discussed， as well as the use of in-situ characterization in in-situ polymer electrolyte preparation. The in-situ technology has great application prospects in the preparation and the characterization of polymer solid electrolytes was pointed out. Simultaneously， several recommendations about focusing on mechanism research，developing new initiation conditions and reaction are proposed to address the problem of the difficulty in controlling the degree of polymerization and the lack of design of matrix structure in in-situ polymerization.

Keywords

• in-situ aggregation
• in-situ characterization
• polymer
• solid electrolyte
• lithium metal battery