In a search to replace the Lithium battery, I am taking another look at hydrogen fuel.

I posted about this video before. My concerns were:

12:44: “has been delivered and stored in special storage tanks at minus 253 degrees (Celsius). It becomes gaseous at higher temperatures.” Green hydrogen has a low efficiency about manufacturing and transportation.

Right now the use of ‘green hydrogen’ is relies on wind and solar energies for production. Could this work in the future? I am not sure how the step of cooling down hydrogen, going against entropy, could be completely green.

There are no easy answers. A combination of power trains seems likely, but …

(edit: Here is a new technology to convert many types of water to hydrogen at room temperature.) https://www.sciencealert.com/clean-fuel-breakthrough-turns-water-into-hydrogen-at-room-temperature

(edit: Here is a new technology to convert seawater to hydrogen.) https://phys.org/news/2022-09-hydrogen-seawater.html

…and from here in Korea, check out one Korean vision of the future: