METHOD OF MAKING A HYBRID PROTON-CONDUCTING MEMBRANE FOR A FUEL CELL Russian patent published in 2020 - IPC H01M4/92 C08J5/22 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to membrane engineering and technology, specifically to methods of producing articles used as a proton-conducting polymer electrolyte in low-temperature hydrogen-air fuel cells. Membrane MF-4SC in H⁺-form is placed between chambers of two-chamber cell, one of which is filled with water-ethylene glycol solution of 0.0025–0.005 M of hexachloroplatinic acid (H₂PtCl₆) with content of ethylene glycol (hereinafter EG) of 25–50 % by volume, another one – with aqueous solution of 0.05 M sodium borohydride (NaBH₄) with addition of 0.5 M sodium hydroxide (NaOH). Solutions are continuously mixed for 60 minutes. As a result, a platinum layer is formed on the surface of the membrane which is in contact with the hexachloroplatinic acid solution.

EFFECT: invention reduces material consumption of the method of producing a hybrid proton-conducting membrane.

1 cl, 2 dwg, 1 tbl