Graphene is an allotrope of carbon in the structure of a plane of sp2 bonded atoms with a molecule bond length of 0.142 nanometres. Layers of graphene stacked on top of each other form graphite, with an interplanar spacing of 0.335 nanometres. It can be considered as an indefinitely large aromatic molecule, the ultimate case of the family of flat polycyclic aromatic hydrocarbons.
Graphene is the thinnest and strongest nano material in the world. It conducts heat and electricity efficiently and is nearly transparent. On normal condition, Graphene only absorbs 2.3% light. Its thermal conductivity is as high as 5300 W/m·K, which is higher than carbon nano tube (CNT) and diamond. Graphene also shows a large and nonlinear diamagnetism, even greater than graphite, and can be levitated by Nd-Fe-B magnets.
Graphene technology now is used in the produce of LED lights. Compared with Aluminum heat sink, the weight of LED lighting fixture with Graphene modules has significantly reduced 50%. In addition, it is superior heat conductivity compared to extrusion or die-cast Aluminum. The mechanical strength and mechanical strength are very optimistic. What’s more, it’s easy to installation.