Method for obtaining a catalytic membrane, catalytic membrane obtained and uses thereof

A process for obtaining proton exchange catalytic membranes comprising the following stages:

• a) mixing at least one metal compound, precursor of a catalyst for reactions of synthesis of H2O from oxygen and hydrogen and decomposition of H2O to generate hydrogen and oxygen, with at least one ionic liquid and/or a deep eutectic solvent, where the metal of the metal compound is neither Au, Pt, Rh, Ru, Ir, Os, nor Pd;
• b) activating the catalyst by calcination and/or pyrolysis at a temperature between 100° C. and 500° C. of the mixture obtained in stage a);
• c) mixing the product obtained in the previous stage with a non-perfluorinated organic polymer by adding a co-solvent to facilitate dissolution;
• d) pouring the previous mixture onto a surface to allow evaporation of the co-solvent and formation of the membrane with the occluded catalyst.