Covalent Organic Framework-Based Materials for Advanced Lithium Metal Batteries

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Lithium metal batteries (LMBs) offer high energy density but suffer from lithium dendrite growth and unstable solid electrolyte interphase (SEI).
• These issues compromise cycling efficiency and pose significant safety risks, hindering practical LMB implementation.

Purpose of the Study:

• To review the application of covalent organic frameworks (COFs) and their derivatives in mitigating lithium dendrite challenges in LMBs.
• To explore the potential of COFs in enhancing anode performance and safety for next-generation energy storage.

Main Methods:

• Analysis of COF structures, including functional groups, internal channels, and tunable architectures.
• Review of COF-based materials and composites for guiding uniform lithium ion deposition.
• Evaluation of COFs' role in enhancing conductivity, transport efficiency, and mechanical strength of LMB anodes.

Main Results:

• COFs and their derivatives demonstrate multifunctional capabilities for addressing lithium metal anode issues.
• COF-based materials effectively guide uniform lithium deposition, suppressing dendrite formation.
• Enhanced conductivity and mechanical strength contribute to improved cycling efficiency and safety.

Conclusions:

• COF-based materials show significant promise for overcoming key challenges in lithium metal battery technology.
• Further research and engineering of COF materials and architectures are recommended for practical LMB applications.