Enhanced fuel cell proton exchange membrane and preparation method thereof

The invention relates to an enhanced fuel cell proton exchange membrane and a preparation method thereof, and the preparation process comprises the following steps: uniformly spreading hydrophilic modified high-strength polymer fibers on a release film according to an MD direction, coating a perfluorinated sulfonic acid resin solution, uniformly spreading the high-strength polymer fibers along a TD direction, coating the perfluorinated sulfonic acid resin solution, and carrying out heat preservation and drying to obtain the enhanced fuel cell proton exchange membrane. And repeating the process for multiple times to obtain a multi-layer composite layer, and performing hot-pressing treatment to prepare the fiber-reinforced fuel cell proton exchange membrane. Compared with the prior art, the problems that in the prior art, the strength of an ePTFE membrane reinforcing layer is low, and sulfonic acid resin is difficult to penetrate from the surface of the ePTFE membrane to fill middle micropores, so that the serv