Sodium ion batteries are already in cars in China, this iteration is even safer. You should read the article.

Na+ batteries are really cool tech, and with a few more iterations of R&D they can potentially replace Li+ batteries, removing the need for rare earth elements that are toxic to people and the environment, dangerous to extract, and more often than not extracted by child slave labor (such as in Xinjiang and Congo).

It doesn't matter how you feel about China, although framing Na+ as "China's battery" is problematic for other reasons.

These batteries are already in production cars. Have been for a while. If you don’t have access to them it’s because of your regressive protectionist government.

This is recycled I read about about this last year in the same kind of context on Reddit.

Separately though I have read there are hundreds of chemical combinations that produce electricity and only a handful have been researched for batteries.