- Fossil fuels are non-renewable and cause pollution
Hydrogen can be used as a fuel and has advantages and disadvantages
- Advantages
- Burns easily with a clean flame
- Only product formed when burned is water, no polluting gases
- Releases large amounts of energy per gram
- Renewable
- Disadvantages
- Storage - gas so has a large volume
- Safety - risk of an explosion
- Supply
- Vehicles that use fuel cells need to match the cost, performance and convinience of petrol and diesel
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