Дослідження впливу природи електродного матеріалу на параметри електросинтезу водню

Abstract

The behavior of electrode materials at the hydrogen electrosynthesis with 3% ammonium chloride solution was investigated. Overvoltage of hydrogen evolution on the vanadium containing electrodes is less in comparison with nickel electrodes. The ability of using titan VT6 alloy as a cathode material in practical electrolysis in a wide range of current densities and pH values has been proved. This alloy has a high chemical resistance. The 12H1МF steel using as the anode material is not effectively. Electrolysis occurs at high voltage and iron and chromium ions accumulate in the electrolyte. The decrease of voltage at the electrolyzer for 1-1,2 V at the hydrogen electro synthesis with electrode pairs Ti (VT6) – Zn and Ni – Zn has been established. Electricity saving is allowed by this fact. Voltage drop is caused by the effect of anodic depolarization reaction. In a solution of ammonium chloride on the zinc electrode, instead of the oxygen evolution reaction, the zinc dissolution is occurred.