Method for extending service life of a hydrogen-evolution electrode

摘要

A method is provided for extending the service life of a hydrogen-evolution electrode having a metal oxide as a catalytic material by adding a component selected from a titanium, niobium, indium, cadmium or antimony component to the alkaline electrolyte during the course of the evolution of hydrogen. The method is suitable for use in the electrolysis of brine in chlor-alkali cells.