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Sodium batteries hit 458 Wh/kg: New material closes gap with lithium (interestingengineering.com)

submitted 3 weeks ago by voidx to c/futurology

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[–] mosiacmango@lemm.ee 16 points 3 weeks ago (1 children)

Chemical. It's in the article:

Battery prototype

The researchers also created a battery prototype using the new material, NaxV2(PO4)3, demonstrating significant energy storage improvements. NaxV2(PO4)3, part of a group called “Na superionic conductors” or NaSICONs, is designed to let sodium ions move smoothly in and out of the battery during charging and discharging, according to a press release.

The material has a unique way of handling sodium, allowing it to work as a single-phase system. This means it remains stable as it releases or takes in sodium ions. This allows the NaSICON to remain stable during charging and discharging while delivering a continuous voltage of 3.7 volts versus sodium metal, higher than the 3.37 volts in existing materials, according to researchers.

[–] Aqarius@lemmy.world 1 points 3 weeks ago

I wonder, though, if having to use Vanadium defeats the point of dropping Lithium for Sodium.