There are two dominant methods for the efficient storage of hydrogen: in tanks under high pressure at ambient temperature, and in insulated vessels at low pressure and extremely low temperature (20 K). Cryogenic liquefied hydrogen (LH₂) has the advantages of a much greater energy content per unit volume and a smaller volume requirement for storage.
Hydrogen can be compressed into high preassure tanks without liquefying it. This is an option if gaseous supply is more economical.
Linde has vast experience in compression and storage of gaseous hydrogen.
Hydrogen can also be stored as a liquid at very low temperatures (-253°C). Liquiefied hydrogen requires cryogenic tanks, and is an efficient solution long-term. Liquid hydrogen provides more energy onboard in the same space and offers faster bunkering time when compared to compressed hydrogen.
Linde Kryotechnik has decades of experience in the construction of hydrogen liquefaction systems. We have designed liquefiers with capacities ranging from 150 to more than 20,000 litres per hour in one train.