Yeah, it blew my mind that the Toyota Mirai’s hydrogen tanks are pressurized to 10,000 psi. To store a decent amount of hydrogen you need compress it to crazy high pressure or cool it with liquid helium or some other exotic extreme cooling. The thing about hydrogen that always confused me is that hydrogen is very energy dense but it physically not very dense.
It’s not really energy dense. It’s the single lightest atom in the universe, meaning it stores the lowest amount of energy. But it’s very reactive chemically.
The water is cheap but the hydrogen requires special pressurized containers which in turn makes it lose its advantage over normal batteries.
Yeah, it blew my mind that the Toyota Mirai’s hydrogen tanks are pressurized to 10,000 psi. To store a decent amount of hydrogen you need compress it to crazy high pressure or cool it with liquid helium or some other exotic extreme cooling. The thing about hydrogen that always confused me is that hydrogen is very energy dense but it physically not very dense.
It’s not really energy dense. It’s the single lightest atom in the universe, meaning it stores the lowest amount of energy. But it’s very reactive chemically.
https://www.umsicht.fraunhofer.de/en/greenhydrogen/ammonia-hydrogen-storage-medium.html