I think Lithium is one of the last issues with current battery tech when you compare the additives and support mechanisms for getting the energy out of the battery and into useful work. Cobalt cathodes, Rare earth metals in the magnets of motors, elements like Scandium in light weight alloys, Tantalum capacitors etc. have all more eyebrow raising supply chains.

There will come a point where the economics of Lithium will require looking at, definitely in the scale-up phase. That is probably under 30 years. But there's a lot of lower hanging fruit before the industry collectively properly get onto looking into direct battery chemistry alternatives like Sodium-Air.