The hydrogen economy is intended to use hydrogen as commercial fuel to replace conventional fuels such as gasoline, natural gas, etc., for vehicles, energy storage, and long-distance transport of energy.
Hydrogen as a fuel can decarbonize the entire value chain, reduce CO2-related emissions and climate threats significantly.
John Bockris coined the term hydrogen economy during a talk he gave in 1970 at General Motors (G.M.) Technical Center. The concept was proposed earlier by geneticist J.B.S. Haldane.
What is the Need for Hydrogen Economy?
- Hydrogen as a primary fuel source can replace fossil fuels and address pollution levels and oil-price hikes.
- Hydrogen is one of the most abundant elements available in the Universe. It is energy-dense, lighter, and is two to three times more efficient than petrol.
- Transportation contributes to one-third of the world's greenhouse-gas emissions, iron and steel, and chemical sectors, use of hydrogen in the transportation section can reduce the emission of greenhouse gas to a great extent.
Types of Hydrogen
- Grey Hydrogen - a byproduct of CO2 and is extracted from hydrocarbons.
- Blue Hydrogen - superior to grey hydrogen and is sourced from fossil fuels.
- Green Hydrogen - generated from renewable sources of energy such as solar and wind.
What are the Advantages of Hydrogen Fuel?
- It has a near-zero carbon footprint as the production of hydrogen fuel combustion forms water.
2H2 (g) + O2 (g) → 2H2O (g) + Energy
2. As vehicular fuel, it provides a range of about 440 miles or 550 km per refill.
3. It can be stored in tanks and integrated into cars' bellies, unlike C.N.G.
4. It is lighter when compared to heavy lithium-ion batteries and is best for long-haul trucks and commercial vehicles.