Hydrogen / H2

Hydrogen as energy storage

 

The hydrogen used as a fuel is not primary energy, but must be produced from primary energy in the same way as electricity generation. Energy is required to produce it. This is partially released again during the chemical reaction in a hydrogen combustion engine or in the fuel cell.

Due to its low density, hydrogen gas contains more energy per unit weight than any other chemical fuel. However, the energy density is very low in terms of volume. Therefore, hydrogen as a fuel must either be highly compressed (up to about 700 bar) or liquefied (−253 °C).

Both require additional energy. Furthermore, the LOHC technology can bind the hydrogen using separate processes, which makes the two previously mentioned processes superfluous. However, energy is also required for the binding process.

Interview with Mr. Schneider, at the IME Conference 21. Topic “Hydrogen and Sustainability”

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