Method for preparing heat-resisting proton exchange film

Abstract

The method for preparing proton exchange membrane includes the following steps: dissolving membrane matrix high-molecular polymer in solvent, adding inorganic matter to form suspended substance, breaking said suspended substance by using nano breaking technology to obtain uniformly-dispersed mixture, using pouring method to make membrane with compact structure. The membrane has good stability andhigh application temperature, can make pile have good electrochemical stability and reliability, and can raise specific power of fuel cell.

Description

technical field

[0001] The invention belongs to the technical scope of fuel cell material preparation, and in particular relates to a temperature-resistant proton exchange membrane preparation method for preparing a proton exchange membrane by doping polymers and inorganic materials. Background technique

[0002] In order to increase the operating temperature of existing proton exchange membranes and increase the specific power of fuel cells, doping with inorganic substances is a common method. In order to make the mixing of inorganic substances and high molecular polymers uniform and stable, the solution in the prior art is to use a sol-gel process. The sol-gel method involves the preparation of a concentrated sol of an oxide or hydroxide as a reactant, and the process of converting it into a semi-rigid or gel by removing the solvent, dissolving the heteropolyacid in an organic solvent, undergoing hydrolysis and Polycondensation leads to gradual gelation, and after drying ...