Graphene may be versatile, but there’s one thing it’s not all that good at – dispersing in water. Now, researchers at Umeå University have found a relatively simple way to do it. Graphene oxide is a different form of the material that can make for stable water dispersion, which can then be used as a kind of graphene paint.
Graphene is essentially a two-dimensional sheet of carbon atoms, arranged in a hexagonal pattern. This deceptively simple material has a range of useful properties – it’s incredibly lightweight, thin and flexible, but still strong. It’s also an excellent conductor of electricity and heat, so it’s turning up in everything from electronics to water filters to clothing.
Ideally, one useful way to get graphene into the right configurations could involve dispersing it in water. This solution could then be painted or sprayed onto a surface to make, for example, supercapacitor electrodes or conductive coatings.