In the course of the work, 3 experimental stands were assembled to conduct experiments and identify reproducibility.The effect of ultrasonic vibrations on the electrolysis process was also studied. To achieve the result, the following tasks were solved:1. A literature review of domestic and foreign patents on devices for the electrolytic decomposition of water under the influence of ultrasound was performed.2. An experimental setup for the separate production of hydrogen and oxygen was developed.3. Methods for measuring the volume and pressure of gases released during electrolysis were developed.4. An assessment of the errors in the measured values was performed. The error in measuring the pressure of Brown’s gas is ± 0,3%; the volume of released hydrogen is ± 3,32 cm3;5. Experimental studies were carried out on installations at currents from 3 to 8 A when applying ultrasound of a fixed frequency of the low-frequency ultrasonic range.6. The use of hydrogen and Brown’s gas is possible in chemical energy storage systems for subsequent conversion into electrical energy or in internal combustion engines on hydrated fuel.