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this post was submitted on 26 Aug 2024
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Batteries have infinite energy now? No storage issues due to electrical surges, heat, cold, or anything else that makes batteries sub optimal? While seemingly by magic, mining rare earth minerals spreads its environmental impact over 10-15 years of the lifetime of the battery with 0 negative impact to the area the mine is located?
Oh wait... None of that is true so I guess you can try again.
Sodium batteries require very little rare earths in comparison to lithium batteries.
It really is too bad about the weak life cycle, poor charge/discharge rate, and incredibly low voltage that begin the story of "Why don't we just use sodium ion batteries?" and place it directly in the "tragedy" section of the book store.
The information I've seen regarding deep discharge life-cycle for sodium ion is that the latest tech is actually extremely good, at least according to this. I don't see how the lower voltage is a problem, since for grid situations you'll have step-up transformers anyway, and the batteries can just be hooked up in series to increase the voltage.
They use abundant materials, will be much cheaper than lithium ion, don't need to be actively cooled, and massively lessen the risk of rupture and fires.
The low density per unit of weight isn't relevant for grid storage, so they seem pretty ideal.