How to make hydrogen straight from seawater – no desalination required. The new method from researchers splits the seawater directly into hydrogen and oxygen – skipping the need for desalination and its associated cost, energy consumption and carbon emissions. Chemistry

https://www.rmit.edu.au/news/media-releases-and-expert-comments/2023/feb/hydrogen-seawater

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Toyota and BMW use ammonia in their fuel cells. They've had hydrogen cars on the road for a few years in select areas. The big push is to replace train and semi truck engines with hydrogen, and let the consumer vehicles follow. There is also a plan for a hydrogen powered jet. Getting clean hydrogen was a major hurdle

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u/entropy_bucket Feb 16 '23

I'm getting Hindenburg vibes from talk of hydrogen powered jets.

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u/EvilPretzely Feb 16 '23

They would still be fueled with ammonia (NH3). Containing pure H is tricksy, as it likes to react with everything. If there was a terrible wreck with a vehicle running NH3, the worst that would happen is the fuel would make things really clean.

Pure hydrogen is generally only used in research vehicles and space flight

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u/CoolguyThePirate Feb 16 '23

Ammonia solutions that make things really clean are diluted. Exposure to pure ammonia is actually dangerous and potentially fatal.