Corrosion behavior of hydrogenated nickel and nickel hydride in sulfuric acid solution

The corrosion behavior with oxygen depolarization of preliminarily cathodically hydrogenated nickel and its hydride is studied in sulfuric-acid solutions by electrochemical and radiometric techniques, and the method of oxygen absorption. It is shown that during the corrosion of hydrogenated nickel, in the initial period, oxygen preferentially interacts with hydrogen, which diffuses from the electrode bulk, and dissolution of the nickel is suppressed. In the case of nickel hydride, the hydride decomposes, giving hydrogen.