RE: Nanene coverage9 Jul 2019 10:27
Robin,
Courtesy of mryl on the ADVFN BB
Axotyl, it's because you are confusing the surface that 1 kg of single layer graphene would cover, with the volume that 1kg of graphene nanoplatelets powder occupies. GNP is basically a very fine powder in a drum. If you check out the density of graphene you'll find that it's not even that low, I've worked with much lower density materials in the lab. So in terms of volume it's nothing out of the ordinary really. The only caveat is maybe that when working with true few layer graphene you don't want it to agglomerate so you won't put all of it in a single container and you want to avoid compressing it, you'll give it space to "breathe", so it may take a bit more volume due to all the air in the drum. It's more the surface covered by a given amount of single-layer 2d material that is impressive, given how thin these materials are. A quick calculation, which might be wrong, tells me that the Barcelona football pitch (105mx68m) would be fully covered by 5.6g of single layer graphene laid flat. I hope that makes sense.