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Graphene: the king of materials waiting to break through

Author: Date:2020-03-10

        Graphene materials have excellent properties, are widely used, and have a broad market space and continuous growth potential. In the long run, with the reduction of preparation costs and the development of product applications, the penetration and usage of graphene materials are expected to increase rapidly. Although the current graphene business has not contributed much to the profitability of related listed companies, companies actively involved in graphene products deserve continued attention.

        Graphene is a two-dimensional carbon nanomaterial with hexagonal honeycomb lattice composed of carbon atoms with sp2 hybrid orbitals. A single layer of graphene is composed of a layer of dense carbon six-membered rings. Its thickness It is about 0.335nm and is by far the thinnest two-dimensional nano-carbon material.

        In fact, graphene originally exists in nature, but it is difficult to peel off the single layer structure. Graphene is layered on top of one another to make graphite, and 1 millimeter thick graphite contains approximately 3 million layers of graphene.

        Physicists Andre Gem and Konstantin Novoselov of the University of Manchester, UK, successfully separated graphene from graphite by micromechanical exfoliation, and thus won the 2010 Nobel Prize in Physics. The submitted graphene materials have special properties not available in other materials, such as electrical properties, excellent mechanical properties, thermal conductivity, surface area, and excellent barrier properties, etc., making them useful in many fields that traditional materials cannot reach. Known as the "king of new materials."

        Graphene can be used in a wide range of fields, mainly in the energy, environment, electronics, and chemical industries, especially in the lithium battery materials, supercapacitors, OLEDs, flexible screens, sensors, chips and other fields in the electronics industry, as well as in the chemical industry. Coating, adsorption, desalination and other fields.

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