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2. Hydrogen characteristics
The use of hydrogen as an energy carrier in rail traction has specific characteristics that make it attractive for a transition to more sustainable solutions. This section focuses on the physical and chemical properties of hydrogen, as well as the different production methods and their environmental impact.
2.1 Physical and chemical properties of hydrogen
Hydrogen is the lightest of the chemical elements, with an atom consisting of one proton and one electron. Its low molar mass gives it a high energy density per unit mass, making it an excellent candidate for energy storage and transport. However, in terms of volume density, hydrogen has a relatively low value, which means it takes up a lot of space compared with other fuels such as diesel. For example, the...
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Hydrogen characteristics
The hydrogen powertrain
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