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I recall hearing similar claims of graphene a while back. I realize that the lag time between academic proof-of-concept and commercial availability is large, but I still haven't heard of any products coming out that are made of graphene. Do these materials' use cases overlap?

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> but I still haven't heard of any products coming out that are made of graphene.

Vitoria have sold bike tyres using a graphine layer for a couple of years now:

https://www.vittoria.com/ww/en/tyres/road-tires/corsa

They were used by both the winners of the Tour de France and Vuelta a Espana last year.

I don't think anyone has ever claimed that graphene is easy to manufacture.

I think anybody can make it with adhesive tape and a piece of graphite, or so the Nobel prize led me to believe.

Making it in large sizes is more difficult.

https://www.abitape.com/an-unlikely-hero-how-sticky-tape-led...

Carbon nanotubes have a similar situation: they're often present in soot, but the hard part is to make them in a controlled way in large amounts.

https://pubmed.ncbi.nlm.nih.gov/28278030/

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