Negatives and positives facts about Hydrogen fuel?

Answer 1

Advantages:

• Emits only water vapour, assuming there is no leakage of hydrogen gas

• It can store up to 3x as much energy as conventional natural gas.

Disadvantages:

• Leakage of H gas (see above) will have detrimental impacts on the stratosphere (California Institute of Technology)

• Production of hydrogen gas currently relies on natural gas and electrolysis and to replace all the vehicles would require 10x as much as currently is used

• Storage is really tough because hydrogen is such a low density gas

• Distribution and infrastructure needs to be refurbished to cope with hydrogen, which can metals by making them brittle

• Use in fuel cells requires catalysts, which usually require a component metal (most often platinum). Platinum is extremely rare, expensive and environmentally unsound to produce.