Why are hydrogen fuel cells not used in cars?

The sceptics’ first argument against hydrogen vehicles is that they’re less efficient than EVs are. Because hydrogen doesn’t occur naturally, it has to be extracted, then compressed in fuel tanks. It then has to mix with oxygen in a fuel cell stack to create electricity to power the car’s motors.

Why is hydrogen used in fuel cells?

Hydrogen can be used in fuel cells to generate power using a chemical reaction rather than combustion, producing only water and heat as byproducts. It can be used in cars, in houses, for portable power, and in many more applications.

Why is it difficult to use hydrogen as a fuel?

Answer : (i) When hydrogen gas is lighted, it burns with an explosion which is very unsafe. (iii) It is very difficult to store and transport hydrogen gas as it is explosively inflammable. Hence it is difficult to use hydrogen as a source of energy, though it has high calorific value.

What are the advantages of using a fuel cell over combusting hydrogen?

Hydrogen fuel cells are cleaner and more efficient than traditional combustion-based engines and power plants. Hydrogen and fuel cells can also be used in mobile applications to power vehicles and mobile power packs. The benefits of fuel cells are: Reduced greenhouse gas emissions.

Can hydrogen be used as a fuel for vehicles?

Hydrogen can also serve as fuel for internal combustion engines. However, unlike FCEVs, these produce tailpipe emissions and are less efficient. Learn more about fuel cells. The energy in 2.2 pounds (1 kilogram) of hydrogen gas is about the same as the energy in 1 gallon (6.2 pounds, 2.8 kilograms) of gasoline.

How do hydrogen fuel cells work in cars?

Fuel cell vehicles use hydrogen gas to power an electric motor. Unlike conventional vehicles which run on gasoline or diesel, fuel cell cars and trucks combine hydrogen and oxygen to produce electricity, which runs a motor.

Why is hydrogen a better fuel than fossil fuels?

Efficiency. Hydrogen fuel is very efficient. More energy is extracted from this fuel source than with conventional power technologies, according to Tobin Smith for Billion Dollar Green. Fossil fuels have a high combustion rate and are capable of releasing tremendous amount of energy.

What are the advantages and disadvantages of using hydrogen gas as fuel?

Hydrogen Fuel Cell Advantages and Disadvantages in Material…

• Hydrogen Fuel Cell Technology.
• Advantage: High Energy Density Improves Productivity.
• Disadvantage: The Use of Fossil Fuels in Hydrogen Production.
• Disadvantage: Hydrogen Storage and Transportation.
• Disadvantage: Fuel Cell Efficiency.