There’s a research result for creating graphene layer easily:
http://news.uic.edu/supersonic-spray-delivers-high-quality-graphene-layer
For the curious onlooker: Focus Fusion isn’t really in the need of graphene coating as far as I follow, even though the odd commenter proposes “Do anything in graphene, because it’s a wonder material”. I’m just posting it in case there’ll be a real need for it.