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this post was submitted on 25 Jul 2023
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CATL and BYD have already shipped the Sodium Ion batteries that cost nearly a third of LiPho and half that of Li-ion at similar densities, you can buy cells and cars in China already.
They also both have cells and cars out next year with a 2x density Li-ion, it's already been showcased so we know it exists but it's not on sale yet. By the time Toyota ships these Chinese companies will have been in market with a comparable product for many years. Sodium ion will do great for existing range and replace LiPho for power storage and the new Li-ion will be used in high range cars and probably replace all Li-ion in everything where density is preferable to price.
How do they manage that you need more sodium to store comparable amount of energy? Larger size?
As far as I know they are equivalent density to LiPho, I don't know how they do it but it should allow similar range to existing current Li-ion batteries.
Density might be similar, but sodium can accumulate and release much less energy than Lithium, and it is heavier. It means that similar batteries, similar density, would need to be larger and heavier.
That's the disadvantage of sodium over Lithium