Author(s):
1. Pavel Kovač, Faculty of Technical Sciences, Department for Production Engineering, Serbia
2. Borislav Savković, Faculty of Technical Sciences, Department for Production Engineering, Serbia
3. Dušan Ješić, International technology Management Academy, Novi Sad, 4. Branislav Dudić, Comenius University, Faculty of Management, Slovakia, Slovakia

Abstract:
Hydrogen H2 is the most common element in space and one of the most common on Earth. On Earth, it is found exclusively in bound form, that is, in various compounds. Today, hydrogen is considered one of the most serious candidates for the fuel of the future. It is a renewable fuel: because it can be produced from water, and the result of its use is again water, and of course energy. Hydrogen production has been known for a long time and can be obtained by electrolysis of water. Electrolysis is carried out by passing a direct current between two electrodes in a container with an electrolyte (salt water). By passing current through the electrolyte, hydrogen is separated from the water and collected at the cathode, and oxygen at the anode. Hydrogen is then collected by special devices and stored in a special tank. Hydrogen turns into a liquid at a temperature of -253 °C and in this state, it is transparent, colorless and odorless, non-corrosive and its density is only 1/40 of the density of water. Such tanks require special construction and must be very well insulated. The main disadvantage is storage, because the tank needs to have a large mass in relation to the mass of hydrogen. Storage is carried out under a pressure of about 200 bars. Today, all developed countries are very intensively engaged in research into the use of hydrogen as an energy source. Methanol batteries are already on sale. Methanol and water "burn" in the electrolyte to hydrogen (H2) and carbon dioxide (CO2). Electricity and oxygen (O2) from the environment are generated in the electrolyte, and water is formed. Modified standard cars with this power supply are already on the streets of Serbia and are used with reduced consumption and high efficiency.

Key words:
Energy,hydrogen,car,water,renewable sources

Thematic field:
SYMPOSIUM A - Science of matter, condensed matter and physics of solid states

Date of abstract submission:
13.08.2025.

Conference:
Contemporary Materials 2025 - Savremeni Materijali

Applied paper from author