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A comment on Israeli Researchers Produce Green Hydrogen with 90% Efficiency. Parent comment

Re:Israeli Researchers Produce Green Hydrogen with 90% Effic... by pjc50 on Thursday August 17, 2023 @11:59AM (#37163723)
> I’m fond of pumped hydro, which we can do anywhere with a height difference

Not really economical unless you've got some suitably-shaped geology to build most of the storage vessels out of.

The lithium issues may be addressed by sodium-ion, which is now mature enough that you can buy it on aliexpress.

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Re:Israeli Researchers Produce Green Hydrogen with 90% Effic... by angiosperm on Thursday August 17, 2023 @12:25PM (#37164119)
"Suitably-shaped geology" means a hilltop, depression optional. Without, you can scrape off the hilltop itself, and use the material to build a levee.
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Re:Israeli Researchers Produce Green Hydrogen with 90% Effic... by slashdev on Thursday August 17, 2023 @02:33PM (#37166066)
There’s sodium ion, molten sodium, iron air, probably various options with iron or aluminum. There’s literally dozens of promising battery chemistries for grid storage where weight and density don’t matter.
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