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hn_throwaway_99
> The current research advances sodium as a viable alternative for batteries, a vital step to combat the rarity and environmental damage of lithium. It's one of many steps ahead.

Curious what some of the many steps ahead are. Seems like these articles about battery breakthroughs WRT non-lithium chemistries come out frequently, but nothing ever seems to come to fruition, and lithium still dominates. Just want to know why all these breakthroughs never make it to industrial scale.

theragra
From my limited research, sodium batteries are somewhat commonly used in Chinese EV.
cultofmetatron
Even if sodium ion batteries have a quarter the energy density of lithium, they are still a massive win for grid scale storage. Honestly don't know why there's such a push for them in EVs when lithium works fine there. The cost benefit of sodium ion really makes a lot more sense when you can just drop a bunch of them on a lot of land and have it essentially be a reserve of power for a municipality.
hyghjiyhu
What are your thoughts on sodium batteries vs water electrolysis for grid scale?
chris222
The safety aspect of them is probably more important than in grid storage. Also the performance at colder temps.
ianburrell
Sodium doesn't make sense for vehicles when there are safer lithium chemistries like LiFePO4 that have lower density than the combustible ones but better than sodium.

LiFePO4, and presumably sodium-ion, can burn once ignited but should be hard to get started.

jerf
The tech is hitting the market now: https://www.bluettipower.com/products/sodium-ion-battery-pio...

YouTube has some reviews if you're interested. They're out in the wild now. Not being in the industry, I was a bit surprised when YouTube randomly popped up some recommendation about that. I didn't realize it was that far along.

Havoc
Keen to use them for hobby purposes. The idea of DIY soldering and lithium has never appealed from a safety pov