Hydrogen energy

The energy released by hydrogen or its isotopes or hydrogen during the state change process. It can be generated from the thermonuclear reaction of hydrogen, but also from the chemical reaction of hydrogen and oxidant. The former is called thermonuclear or fusion energy, and its energy is very large, usually in the category of nuclear energy; the latter is called chemical energy for fuel reactions, and it is commonly called hydrogen energy.

Hydrogen energy is an important energy source that can be used to replace petroleum in transportation and can also be used as a fuel cell that can generate electricity with high efficiency. Hydrogen has good environmental benefits and is an ideal clean energy source. However, very few hydrogens exist on the earth alone and often appear as compounds and must be converted by other energy sources, such as hydrogen production from solar energy, hydrogen from biomass, hydrogen production from electrolyzed water, and hydrogen production from hydrocarbon fuels. The cheap and large amount of hydrogen production technology is the key to the development and utilization of hydrogen energy.