To provide the most efficient electrolysis process of hydrogen and oxygen generation and the electrode twain design there were studied the following: - The process of high pressure hydrogen and oxygen cyclic generation in the membrane less electrolysis systems. - The permissible ranges of voltage variation on the electrodes were determined depending on the electrochemical reactions taking place on the active electrode. - There was studied the process of hydrolysis and oxidation of the active electrode hypoferrite at the corresponding half-cycles of hydrogen and oxygen release. - There was studied the effect of variation of the distance between the active and passive electrodes onto the electrolysis process efficiency.