ANALYSIS OF THE ALUMINUM DISSOLUTION CONDITIONS DURING HYDROGEN RELEASE BY POLARIZATION DIAGRAM

The article is devoted to one of the most pressing problems of the economy and energy independence of Ukraine and the world — alternative, "green" energy. Interest in H2 as an ecologically clean renewable fuel is constantly growing. An important place among the methods of obtaining hydrogen is occupied by electrochemical decomposition of water in saline, acidic or alkaline solutions. Hydrogen obtained by the electrolytic method is the purest of all methods of its industrial production. But the production of hydrogen consumes a significant amount of electricity. We offer a method of obtaining hydrogen with the simultaneous generation of electricity, which is implemented by replacing the anodic process of oxygen release with the dissolution of a backfill anode made of an electronegative metal — aluminum. According to the polarization diagrams, the conditions of dissolution of the aluminum anode, its polarization and polarizability were investigated. This made it possible to estimate the potential difference and current density generated in the reactor. Determining the optimal range of concentrations and temperatures allows to control the process of dissolving aluminum and its alloys, including using additional cathode. In the future, this will allow to substantiate the design of the elements of the electroreactor for the production of hydrogen.