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Changleen t1_je39abs wrote

Reply to comment by DrMux in The Swiss hypersonic hydrogen jet aiming to fly between Europe and Australia in 4 hours by mancinedinburgh

It doesn’t ‘need’ to be stored at high pressure at all. It just often is for convenience. Actually when under consideration for seasonal storage, using old salt mines or other mines with less permeable rock has been proposed and tested as a really cheap way to store a lot of H2.

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Xeroque_Holmes t1_je4gfa6 wrote

> It doesn’t ‘need’ to be stored at high pressure at all.

Just to circle back to the original topic, in airplanes it does. Otherwise you won't have very much of it.

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