Judging from that graph, it looks like the sodium ion batteries are about as energy dense as Li-ion was in 2020, which is far from useless. Li-ion may still be the best but at a point, there's "good enough" for many applications (eg cellphones) if the price is low enough.
FaceButt9000
joined 2 years ago
What's good in small concentrations, but lethal in higher? What's a glaring red flag you're encroaching on a lethal concentration?
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For single files, I use qrcp