SAMMENSATT MEMBRAN/ELEKTRODE, FREMGANGSMAATE VED DENS FREMSTILLING OG ANVENDELSE AV DEN I EN ELEKTROKJEMISK CELLE FOR ELEKTROLYSE AV ALKALIMETALLHALOGENIDER.

摘要

A composite membrane/electrode, process for making same, an electrochemical cell and its use in the electrolysis of alkali metal halides, especially sodium chloride, are described. The composite membrane/electrode comprises a perfluorinated ion-exchange membrane having at least a layer of polymer having carboxylic functionality and a layer of polymer having sulfonic functionality, and a stratum of electrocatalyst bonded to at least one surface thereof. A chloralkali cell with such a composite membrane/electrode operates at low voltage, high current efficiency, and low power consumption.