[scythe]

Worth noting that Tiamat's battery is sodium vanadium fluoride phosphate, not sodium ferrocyanide. So, these are not quite the same technology. Vanadium costs a similar amount as nickel and has a higher abundance, but the present-day annual production is much lower. The long-term resource outlook for vanadium is unclear.

Sodium ferrocyanide ("Prussian white") was claimed by CATL as well, though they have been supplementing it with lithium in cars for some reason. The cynic in me thinks that the lithium is there to stabilize unfavorable cycling characteristics of the sodium; the optimist hopes it is just because lithium is cheaper at scale right now.