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And if that was 10 dollars of sodium, that sounds like a pretty big cost reduction to me? Sodium is cheap to extract from all sorts of sources, less toxic to hu
by KirinDave 8y ago
And if that was 10 dollars of sodium, that sounds like a pretty big cost reduction to me? Sodium is cheap to extract from all sorts of sources, less toxic to humans than lithium pre-processing, and you don't have to move it around the world.
Sodium batteries don't just replace the lithium, they also use phosphorus electrodes. Also easy to source.
- fmajid 8y agoThe most important benefit of sodium batteries is safety, they don't suffer from the runaway thermal failures of LiIon. The 10% or so cost advantage itself is not compelling.
- KirinDave 8y agoThe ability to source parts globally and without scarcity seems pretty damn compelling. And the lack of thermal runaway means you can have cheaper charging and regulation features on the battery.
- maxerickson 8y ago$200 on a $10,000 or $15,000 battery. I definitely think we can run a nice civilization on sodium batteries if we need to, that wasn't my point.
- pfdietz 8y agoIf you want rock bottom materials cost, go with sulfur chemistry. https://www.sciencedirect.com/science/article/pii/S2542435117300326 https://www.sciencedirect.com/science/article/pii/S254243511... "the cost of active materials per stored energy is exceptionally low, ∼US$1/kWh when using sodium polysulfide."