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Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
Finally, took 495 GPa but Harvard may have done it.
Seems to be metastable, the catch is that to make that one precious Nobel-worthy sample was at the cost of literally hundreds of failed attempts and broken diamonds. On the flip side the procedure is well documented and can be possibly done at lower pressures using silicon carbide modified in a similar way at low temperature with LiH6.
Intriguingly suggests that MH may actually have existed in used (defunct) NiMH batteries and all this time been shielded from us by the nickel casing. If they overcharge and vent the MH is lost but at least this means that waste EV packs could be a valuable source of MH if reprocessed correctly.
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
Ages ago. Also it appears that MH though metastable is not stable in air at ambient pressure or even a hydrogen atmosphere at room temperature. It needs cooling and pressure or it becomes a gas again.
also see related maybe? Methinks they should rewrite the Periodic Table for high pressure.
Sad news folks,
On the flip side they *did* apparently see signs of diamagnetism but the data was very sketchy.
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Metallic hydrogen :-)
