What material is graphene?

Graphene is a two-dimensional material with the thickness of only one carbon atom, which is formed by arranging carbon atoms in a hexagonal honeycomb lattice.

Graphene is a material extracted from graphite, which was originally separated from graphite. It is a highly conductive form of elemental carbon, which consists of a single flat carbon atom sheet arranged in a repeated hexagonal lattice.

Graphene is the thinnest and hardest nanomaterial in the world. It is almost completely transparent and only absorbs 2.3% of the light. The thermal conductivity is as high as 5300 W/(m k), which is higher than that of carbon nanotubes and diamond. At room temperature, its electron mobility exceeds15000 cm2/(v s), which is higher than that of carbon nanotubes or silicon crystals, while its resistivity is only about10-6 Ω cm, making it the lowest resistivity material in the world.

Because of its extremely low resistivity and extremely fast electron running speed, it is expected to be used to develop a new generation of thinner and faster conductive electronic components or transistors. Because graphene is essentially a good transparent conductor, it is also suitable for manufacturing transparent touch screens, optical panels and even solar cells.

Characteristics of graphene

It is 200 times heavier than steel, highly transparent and flexible, with incredible natural barrier and the highest conductivity at room temperature. In addition, in terms of atomic thickness, it is classified as a 2D material with only two dimensions.