Application and Research Progress of Covalent Organic Frameworks for Solid-State Electrolytes in Lithium Metal Batteries

Covalent organic frameworks (COFs) are a class of crystalline porous organic polymers with periodic networks that are constructed from small molecular units via covalent bonds, which have low densities, high porosity, large specific surface area, and ease of functionalization. The one-dimension nanochannels in COFs offer an effective means of transporting lithium ions while maintaining a stable structure over a wide range of temperatures. As a new category of ionic conductors, COFs exhibit unparalleled application potential in solid-state electrolytes. Here, we provide a comprehensive summary of recent applications and research progress for COFs in solid-state electrolytes of lithium metal batteries and discuss the possible development directions in the future. This review is expected to provide theoretical guidance for the design of high-performance solid-state electrolytes.

Automated summary

Covalent organic frameworks (COFs) are crystalline porous organic polymers constructed from small molecular units via covalent bonds, offering low densities, high porosity, large specific surface area, and ease of functionalization. The one-dimensional nanochannels in COFs provide an effective means of transporting lithium ions while maintaining a stable structure. This review summarizes recent applications and research progress for COFs in solid-state electrolytes of lithium metal batteries and discusses future development directions, aiming to provide theoretical guidance for the design of high-performance solid-state electrolytes.