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Hydrogen vehicles in Denmark left without fuel as all commercial refuelling stations shuttered
(www.hydrogeninsight.com)
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this post was submitted on 21 Sep 2023
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I hadn't thought of it before but it's obvious, hydrogen is a gas at room temperature, it had to be stored under pressure in order to get any significant mass into the volume of a tank. So it's under pressure in the refueling station and in the car's tank. How does it get from one to the other without boiling away?
Hydrogen is a gas, under very high pressure but you will never find it in a liquid form unless you cool it down to -250 C or so. It's not used in liquid form for such applications.
There is though the need to chill the hydrogen to about -20/-40C before delivery to the vehicles due to some anomalous properties of hydrogen respect to ever other gas known to humans.
oh there are a few ways. One group is researching turning H2 into a paste. the paste mixes with water and breaks down into water and Ca+ ions. You now have a energy density around liquid hydrogen and it only add some calcium to the exhaust. There is also storing hydrogen in metal disks.