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Originally Posted by kulgan  Liquid hydrogen can also be used. It's not as efficient, though (read the wiki page). There's a hydrogen pump at a petrol station not too far from me. Only for the publicity, of course... |
that's suicide. the freezing temperature of hydrogen is so low that if you got a drop on your shoe it's goodbye foot.
so far the cleanest storage methods in my experience has been nickel metal hydride bonding...
Hydride Basics