Have a look at The Limiting Factor episode "The Hype and Reality of Sodium Ion Batteries" https://youtu.be/KjiqqafD_0w?si=txe6eODkSiasSylg
It's really well done and digs into all the details on sodium-ion. Lots to like with sodium-ion (charge rate for one) but cost isn't going to be competitive for at least 5 and more likely 10 years.
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