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mludd t1_ix2rcll wrote

Reply to comment by Hellscape_Instigator in Super-hot salt could be coming to a battery near you by Apart_Shock

> Weren’t molten sodium batteries already a thing and proven to be really bad convenience-wise.

Yup, Aging Wheels did a video on the Th!nk City and mentioned this issue. Basically, if you left your Th!nk City unplugged overnight the battery would freeze and stop working until you re-melted the sodium (by charging it).

So usable in warmer climates if you regularly plugged it in but otherwise a bit of a hassle.

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AndreLeo t1_ix32j6d wrote

Slight correction, it’s less about melting the sodium than melting the salt (the electrolyte) here. Whilst the battery could perfectly handle the electrodes in a solid state, unfortunately most solids conduct ions barely at all - which also is the reason why developing solid state batteries is so hard

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