Hydrogen - a special atom
To save CO2 emissions and replace fossil fuels, alternatives are desperately sought after. There is a lot of discussion about hydrogen as an energy carrier and the use of fuel cell technology in the mobility sector, among other things. Hydrogen is not only the first element of the universe, but also under discussion as an alternative due to the high gravimetric energy density and the use of renewable energies for various applications in the transport sector. Despite the poorer efficiency compared to battery-electric vehicles, hydrogen has a greater range thanks to its higher storage density. In addition, the sector coupling makes hydrogen versatile with other areas of application in the building, electricity, and heating sectors. Hydrogen can be obtained and transported in various processes such as electrolysis and can be liquefied or stored in compressed form.
Fuel cell technology
In the fuel cell, the chemical reaction of hydrogen and oxygen generates electricity that is used to drive the electric motor. Due to the small volume and the long range, hydrogen or fuel cell technology is used in the modes of transport cars, trucks, trains, ships, and airplanes, with no exhaust gases or noise.
Despite higher conversion losses, the fuel cell offers some advantages in terms of the overall systemic balance of CO2 emissions, range and charging time. The federal government is therefore funding various projects to enable hydrogen to be launched on the market and in June 2020 proclaimed the “National Hydrogen Strategy”. The automotive industry had already presented the first converted hydrogen car in 1978. However, the high production costs and the infrastructure that is still being set up with only a small number of items produced have so far prevented a market launch that is ready for series production. Further information on hydrogen in mobility can be found in the fact check: