[fortysixdegrees]

This is going to mess up RoHS

https://en.wikipedia.org/wiki/Restriction_of_Hazardous_Subst...

[varjag]

RoHS has a number of exceptions. Ambient temp/pressure superconductivity will absolutely be excepted too.

[seventytwo]

Nope, sorry. The EU is probably just gonna pass on RT superconductors. /s

[cperciva]

Not necessarily. The "strained crystal" approach probably extends to other elements; mixing Pb and Cu works well since there's a large difference in their sizes, but rare earths might work just as well as Pb.

[NoMoreNicksLeft]

Can we get those in volumes necessary to do high voltage lines though?

[bawolff]

There is already a bunch of exceptions for lead, if this is useful with no alternatives they would probably just add more exceptions.

[ajuc]

Lead-acid batteries are mostly lead and legal. I'm sure they will make this legal too.