| abstract |
The present invention provides a method for preparing a metal-organic framework-modified nanofiber proton exchange membrane. The method realizes the uniform distribution of metal-organic framework among proton-conducting polymer nanofibers through synchronous electrospinning/electrostatic spraying technology, and is processed by solvent steam and heat. After pressure treatment, the polymer nanofibers and the polymer layer coated on the surface of the metal-organic framework are melted and cross-linked to form a dense metal-organic framework modified nanofiber proton exchange membrane. In the present invention, the proton-conducting polymer nanofibers are cross-linked and interconnected to form a continuous proton transfer channel, and the metal-organic framework proton conductor is tightly anchored therein, providing a more sufficient and effective transfer site for the proton carrier, so that the composite membrane has excellent proton Conductivity. In addition, the presence of metal-organic frameworks between nanofibers hinders the passage of methanol to a certain extent, which greatly reduces the methanol permeability of the composite membranes. The preparation method is simple and easy to implement, has strong applicability, and is easier to realize large-scale production operations. |