Hydrogen gas at combustion temperatures produces very caustic acids and bases depending on whatever else is there such as nitrogen, sodium, etc.
No container holds hydrogen perfectly; so there will tend to be a developing flammable hydrogen cloud around the storage container.
Safest way is combine the hydrogen with carbon, then burn that compound.
"Safest way is combine the hydrogen with carbon, then burn that compound."
Bingo! You win the prize!
The best transportation method for hydrogen is to connect it to carbon in a hyrdo-carbon. Oh, but that's what we are doing already! The more I look at hydrogen as a fuel, the more problems crop up. At least with hydrocarbons, the CO2 buildup can be remedied by planting plants.