Liquified hydrogen storage

Hydrogen has the highest energy storage density referring to volume when it is liquefied before storing. Hydrogen is liquefied at -235°C.

Cryo-tanks - tanks for liquid gases at very low temperatures are called this - can be produced with very high quality today. The losses resulting from the gradual heating up of the liquid hydrogen in the tank (waste steam losses) can be kept very low. The storage of liquid hydrogen is especially suited for the use in vehicles because the space requirement of liquid hydrogen tanks is lowest.

For the re-fuelling of these vehicles automatic robots exist already.

Stationary liquid-storage will only be used when hydrogen is really requested in liquid form, e.g. in fuel stations. For all other applications the high amount of energy requested for the liquefaction should be avoided wherever possible.

BMW with liquid hydrogen storage in the back

Robot fueling station at Munich airport