Properties And Applications Of White Graphene
Mar 09, 2022
"White graphene" is another name for hexagonal boron nitride (abbreviated H-BN). Hexagonal boron nitride is very similar to graphite in structure, with hexagonal layered structure, soft texture, strong workability, and white color, so it is commonly known as "white graphite" (now also known as "white graphene").
Both hexagonal boron nitride and graphene are layered, two-dimensional materials only one atom thick. The difference is that graphene bonds only covalently between carbon atoms, while the bonds in hexagonal boron nitride crystals are covalently between boron and nitrogen atoms.
Although similar in structure, the electrical properties of the two are worlds apart. Hexagonal boron nitride is a natural insulator because it has no free-moving electrons in its layered structure, whereas graphene is an excellent conductor.
In addition, H-BN also has high thermal stability, good thermal conductivity and electrical insulation, broadband gap (about 5.5 eV), unique UV luminescence performance, good lubricity, high mechanical strength, chemical corrosion resistance, neutron absorption capacity and other obvious characteristics.
