A Large-Area Uniform Three-Dimensional Covalent Organic Framework Membrane for Stabilizing Li-Metal Electrodes via Solvation Cages.

ABSTRACT: Covalent organic frameworks (COFs), known for their ordered structures, hold promise as ion-conducting materials in cells/batteries. Nevertheless, the rigid cross-linking of porous materials prevents them from being processed into membranes, while composite membranes weaken the material's conductivity advantage due to phase interruptions. Here, we report a phase-continuous 3-dimensional COF (3D-COF) membrane with a large size of 15 cm × 25 cm, fabricated via in situ interfacial engineering. The COF membranes possessed a non-interpenetrating dia topology that facilitated 3D continuous ionic pathways at the molecular level. Further, the hydroxyl and imine groups on the framework could form Li⁺-solvation cages, providing the hydrogen-bonding locking sites that facilitate the conver

SUBMITTER: Tang Z 

PROVIDER: S-EPMC12508527 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature