What are the disadvantages of hydrogen fuel cells?

As such Hydrogen has an important role in the future as a replacement for imported petroleum, used currently in cars and trucks, but it has the following disadvantages :

1. Although Hydrogen cells are being used to power hybrid cars, it's still not a feasible source of fuel for everyone. It is expensive.

2. The transport and storage of Hydrogen, even in small amounts is difficult.

3. As of the moment the present infrastructure supports gasoline, replacing it requires refitting. This becomes highly expensive.

4. It is a very powerful source of fuel and can be very flammable.

5. Although Hydrogen energy is renewable and has minimal environmental impact, it still depends on fossil fuels.

Some disadvantages of hydrogen fuel cells include:

1. Infrastructure Challenges: Limited infrastructure for hydrogen production, storage, and distribution, leading to high costs and logistical issues.

2. Energy Intensity: Production of hydrogen fuel requires significant energy inputs, often derived from fossil fuels, diminishing its environmental benefits.

3. Storage and Transport: Hydrogen has low energy density, requiring specialized storage and transportation methods, which can be costly and inefficient.

4. Safety Concerns: Hydrogen is highly flammable and can pose safety risks if not handled properly, necessitating stringent safety measures and regulations.

5. Cost: Hydrogen fuel cells and related technologies are currently expensive to manufacture and maintain, limiting their widespread adoption as a mainstream energy source.

6. Limited Availability: Hydrogen production relies heavily on natural gas reforming, which produces carbon emissions, and alternative methods like electrolysis are still relatively expensive and uncommon.

7. Durability and Lifespan: Fuel cell components may degrade over time, reducing efficiency and requiring regular maintenance or replacement, adding to operational costs.