化工学报 ›› 2023, Vol. 74 ›› Issue (12): 4764-4776.DOI: 10.11949/0438-1157.20231155

• 综述与专论 • 上一篇    下一篇

金属锂固体电解质界面膜的研究进展

郑立涵(), 沈之川, 施志聪()   

  1. 广东工业大学材料与能源学院,广东 广州 510006
  • 收稿日期:2023-11-09 修回日期:2023-12-26 出版日期:2023-12-25 发布日期:2024-02-19
  • 通讯作者: 施志聪
  • 作者简介:郑立涵(2000—),男,硕士研究生,15560520693@163.com
  • 基金资助:
    国家重点研发计划项目(2022YFE0202400)

Research progress on solid electrolyte interphase of lithium metal

Lihan ZHENG(), Zhichuan SHEN, Zhicong SHI()   

  1. School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
  • Received:2023-11-09 Revised:2023-12-26 Online:2023-12-25 Published:2024-02-19
  • Contact: Zhicong SHI

摘要:

固体电解质界面(solid electrolyte interphase, SEI)是锂金属电池在首次充放电时,锂金属负极表面形成的一层钝化膜,对电池的循环性能和安全性能等具有至关重要的影响。充分地认识SEI膜将有助于开发具有更长循环寿命和更高安全性能的锂金属电池。综述了锂金属电池SEI膜的研究进展,介绍了SEI膜的组成和结构,梳理了各种常见组分的形成条件和作用,论证了两种用于描述SEI膜结构的模型,即马赛克模型和层状模型,总结了影响SEI膜组成和结构的关键因素,如电解质添加剂、电极电位、温度和电流密度等。并介绍了通过引入电解质添加剂和构建人工SEI膜实现界面稳定调控的最新研究进展,最后展望了SEI膜未来的研究方向。

关键词: 金属锂, 电化学, 显微结构, 锂金属电池, 固体电解质界面膜

Abstract:

Solid electrolyte interphase (SEI) is a passivation film formed on the surface of the lithium metal anode when the lithium metal battery is first charged and discharged. This interphase has a crucial impact on the cycle performance and safety of lithium metal batteries. A good understanding of SEI will help researchers develop lithium metal batteries with longer cycle life and higher safety. This paper reviews the research progress on solid electrolyte interphase in lithium metal batteries. It introduces the composition and structure of SEI, organizes the formation conditions and roles of various common components. Two main models used to describe the structure of SEI, namely the mosaic model and the laminar model, are demonstrated. Additionally, it summarizes key factors that affect the composition and structure of SEI such as electrolyte additives, electrode potentials, temperature, and current density etc. We also introduced the latest research progress in achieving interface stability control by introducing electrolyte additives and constructing artificial SEI membranes, and finally looked forward to the future research directions of SEI membranes.

Key words: lithium metal, electrochemistry, microstructure, lithium metal battery, solid electrolyte interphase

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