Ok maybe a lot of people don’t know about the big issue of hydrogen fuel, well , we need learn about the basics.
What is the hydrogen?
Hydrogen is one of two natural elements that combine to make water. Hydrogen is not an energy source, but an energy carrier because it takes a great deal of energy to extract it from water. It is useful as a compact energy source in fuel cells and batteries. Many companies are working hard to develop technologies that can efficiently exploit the potential of hydrogen energy.
and what’s the hydrogen fuel?
In a flame of pure hydrogen gas, burning in air, the hydrogen (H) chemically combines with oxygen (O) to form water (H2O) plus a lot of heat is produced. It does not produce other chemical by-products. Hence a key feature of hydrogen as a fuel is that it is non-polluting (since water is not a pollutant). Pure hydrogen does not occur naturally; it takes energy to manufacture it. The energy is eventually delivered as heat when the hydrogen is burned. The heat in a hydrogen flame is a radiant emission from the newly formed water molecules. The water molecules are in an excited state on initial formation and then transition to a ground state, and the transition unleashes thermal radiation. This heat can provide motive power for cars, boats and airplanes. Smaller devices can also be powered by hydrogen through the use of hydrogen fuel cell batteries, which can power an electric motor.
At the gas pressure that hydrogen is typically stored at, hydrogen requires four times more storage volume than the volume of gasoline that produces the equivalent energy, but the weight of this hydrogen is nearly three times lighter than the gasoline.With regard to safety from unwanted explosions, hydrogen fuel in automotive vehicles is at least as safe as gasoline.The advantages and disadvantages of hydrogen fuel compared to its competitors are discussed at hydrogen economy.