Graphene printed into complex 3D shapes by US research team

Previously, researchers could only print graphene in 2D sheets or basic structures. Now, Virginia Tech engineers have now collaborated on a project with colleagues at Lawrence Livermore National Laboratory that allows them to 3D print graphene objects at a resolution that is claimed to be an order of magnitude greater than ever before printed. This, they say, unlocks the ability to theoretically create any size or shape of graphene. The research is published in Materials Horizons.

Because of its strength and its high thermal and electrical conductivity, 3D printed graphene objects would be highly coveted for use in batteries, aerospace, separation, heat management, sensors and catalysis.

Graphene is a single layer of carbon atoms organised in a hexagonal lattice. When graphene sheets are stacked on top of each other and formed into a three-dimensional shape, it becomes graphite, which has poor mechanical properties. But if the graphene sheets are separated with air-filled pores, the three-dimensional structure can maintain its properties. This porous graphene structure is called a graphene aerogel.