High temperature proton exchange membrane for fuel cell, and preparation method thereof

The present invention discloses a high-performance polymer high temperature proton exchange membrane for a high temperature proton exchange membrane fuel cell, and a preparation method thereof. The method comprises: blending a polymer with excellent thermal stability and chemical stability (such as PES, PSF and other engineering plastics) and a hydrophilic polymer with N-heterocycle on a side chain (such as PVP, P4VP and the like); adopting tape casting membrane forming or solution casting membrane forming; after membrane removing, carrying out an acidification (phosphoric acid or/and heteropoly acid) treatment for the prepared homogeneous blended membrane so as to provide good high temperature proton conductivity for the membrane. The exchange membrane is a homogeneous, transparent, and compact membrane, has characteristics of excellent chemical stability, excellent thermal stability, excellent mechanical property and excellent high temperature proton conductivity, and can meet the application requirements of the high temperature proton exchange membrane fuel cell. The proton exchange membrane can further be used as the membrane material for high temperature water electrolysis apparatuses, high temperature batteries, super capacitors and other devices. The proton exchange membrane material has characteristics of low cost, simple preparation process, wide use temperature range (100-200 DEG C), good high temperature proton conductivity and excellent mechanical property.