Sep 04, 2019 Pageview:538
Stripping graphene from graphite is a chemical change. Because graphene and graphene are different substances, changes in the formation of new substances are chemical changes.
Graphene is both the thinnest material and the strongest material. The fracture strength is 200 times higher than that of the best steel. At the same time, it has a good elasticity and can stretch up to 20 % of its own size. It is currently the thinnest and most powerful material in nature. If a piece of graphene with an area of 1 square meter is used as a hammock, it can weigh less than 1 mg to support a kilogram cat.
Graphene is a two-dimensional(2D) periodic Honeycomb lattice structure composed of carbon six-membered rings. It can warp into zero-dimensional(0D) fullerenes, roll into one-dimensional(1D) carbon nanotubes, or pile into three-dimensional(3D) graphite, Graphene is therefore the basic unit that constitutes other graphite materials. Graphene is the most stable benzene-six-membered ring in organic materials. And ... The ideal graphene structure is a planar hexagonal lattice, which can be seen as a layer of stripped graphite molecules. Each carbon atom is SP2 hybridized and contributes the remaining electrons on the p-orbital to form a large π bond. π electrons can move freely. Give graphene good conductivity. The two-dimensional graphene structure can be seen as the basic constituent unit that forms all SP2 hybrid Carbonaceous materials.
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