Graphene spray and ...

Graphene is basically 2-dimensional graphite. Graphite is soft and slippery because it’s in layers of 2-dimensional carbon atom "sheets" weakly bonded to other sheets of similar carbon.

Graphene is therefore a single "sheet" of carbon atoms arranged in hexagons. The carbon-carbon bonds in the 2-D section of graphite (and thus also graphene) are stronger bonds than carbon atom bonds in diamond, hence the "super" properties of graphene.

Graphene is right now rather difficult to make - it was literally discovered by putting a piece of scotch tape on graphite, carefully pullling up the tape leaving a single layer of graphene.

https://en.wikipedia.org/wiki/Graphene_production_techniques <--- This should answer questions as to how one would apply Graphene to a speaker driver. It $ur€ won't b€ ¢heap....

The problem with graphene is it's basically a 2-dimensional substance, and that's not the most stable state for a substance to be in - it will tend to "curl up" into the more stable 3-dimensional state, unless special methods are used, like stated in the Wikipedia article.

Sort of related, B&W put a coat of diamond on some of their tweeters, I'm guessing using chemical vapor deposition.

" For example check this."

So in Broviet Russia, Graphene Sprays You? ;)