Imine‐Linked 3D Covalent Organic Framework Membrane Featuring Highly Charged Sub‐1 nm Channels for Exceptional Lithium‐Ion Sieving

Abstract Coupling ion exclusion and interaction screening within sub‐nanoconfinement channels in novel porous material membranes hold great potential to realize highly efficient ion sieving, particularly for high‐performance lithium‐ion extraction. Diverse kinds of advanced membranes have been previously reported to realize this goal but with moderate performance and complex operations gained. Herein, these issues are circumvented by preparing the consecutive and intact imine‐linked three‐dimensional covalent organic framework (i.e., COF‐300) membranes via a simple solvothermal approach and employing the intrinsically interconnected sub‐1 nm one‐dimensional channels for exceptional lithium‐ion sieving. The…

• NN
  National Natural Science Foundation of China

  Award: 22408246
• PR
  Postdoctoral Research Foundation of China

  Award: 2024M752318