Fabrication of Azacrown Ether‐Embedded Covalent Organic Frameworks for Enhanced Cathode Performance in Aqueous Ni−Zn Batteries

Crown ethers (CEs), known for their exceptional host-guest complexation, offer potential as linkers in covalent organic frameworks (COFs) for enhanced performance in catalysis and host-guest binding. However, their highly flexible conformation and low symmetry limit the diversity of CE-derived COFs. Here, we introduce a novel C