Chemical Research in Chinese Universities ›› 2022, Vol. 38 ›› Issue (3): 735-743.doi: 10.1007/s40242-022-2065-2

• Reviews • Previous Articles     Next Articles

Progress on High Voltage PEO-based Polymer Solid Electrolytes in Lithium Batteries

HOU Wenhui, OU Yu and LIU Kai   

  1. Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China
  • Received:2022-02-28 Revised:2022-04-08 Online:2022-06-01 Published:2022-05-26
  • Contact: LIU Kai E-mail:liukai2019@tsinghua.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (No.22071133), the China Postdoctoral Science Foundation(No.2021M691763), the Tsinghua-Foshan Innovation Special Fund(TFISF), China (No.2020THFS0130), and the Fund of the Tsinghua University-China Petrochemical Corporation Joint Institute for Green Chemical Engineering (No.421120).

Abstract: Polymer electrolytes have attracted great interest for next-generation lithium-based batteries on account of safety and high energy density. In this review, we assess recent progress on the design of poly(ethylene oxide)(PEO)-based solid polymer electrolytes in high voltage lithium batteries and identify possible side reactions between PEO-based electrolytes and existing cathodes. We provide an overview of the ways to enhance high voltage resistance of PEO-based electrolytes. Those include components blend, molecular design and interface modification. With these efforts, we want to present new insights into rational design of PEO-based electrolytes to develop solid-state lithium batteries for advanced performance.

Key words: Poly(ethylene oxide), Lithium battery, High voltage, Molecular design, Interface modification