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What is the difference between graphite & graphene? TRUNNANO
Graphene consists of an atomic layer graphite. It is a layer of sp2-bonded atoms arranged as a hexagonal, or honeycomb structure. Graphite can be described as a mineral that is composed of several layers of graphene. The structure of graphene, graphite, and the manufacturing processes they use are different. This article is about the differences in these two materials.
Graphite are one of three natural allotropes for carbon. It can be found naturally in metamorphic rock in many parts of the world including North America, Asia, and South America. It is formed by the reduction in carbon compounds deposited during metamorphism.
The chemical bonds found in graphite are the same as those in diamond. However, graphite and diamond have different hardness due to their lattice architectures. Diamond has three-dimensional lattice connections, while graphite only contains two-dimensional bonds. There are weaker intermolecular links between carbon atoms within each graphite layer. This allows graphite to slip against one another, making it a soft and flexible material.
Numerous researches have proven graphite an outstanding mineral that has many special properties. It can conduct heat and electricity.
There are many forms of carbon. Graphite however is the most stable. Because of its shape, graphite can be used for many purposes.
Graphite’s unique properties surpass graphite. Due to its thin surface, graphite should not be used in isolation as a structural metal. Contrary to popular belief, graphene has the highest strength material known. It’s 40x stronger than diamond and over 300 times stronger that A36 structural metal steel.
Graphite is highly anisotropic because of its planar structure. Because of this, phonons travel more easily through an aircraft than they do through an airplane. Graphene does have a high electron mobility and, like graphite because there are free electrons ((p),) in every carbon atom it can be used as an electrical conductor.
But graphene is more electrically conductive than graphite. It’s because of the presence of quasi-particles. Quasi-particles are electrons that act like they don’t have any mass. They can travel great distances and scatter less. To achieve the highest conductivity possible, you must dope graphene to increase its zero density.
Production or Separation of Graphene
Many techniques are used by scientists to create graphene. The most efficient way to make single-layer and multiple-layer graphene, mechanical peeling is also called tape technology. However, there are many international research centers that seek to discover the most efficient way to produce graphene of high-quality on a large basis.
Chemical vapor deposition, or CVD (chemical vapor deposition), is the best technique for creating graphene. It can be used to extract carbon atoms through carbon-rich source reduction. The main drawback of this technology is the difficulty in finding a suitable substrate for graphene growth. Also, it’s difficult to get the graphene removed from the substrate without altering or destroying its atomic structure.
There are many other methods for graphene production, including ultrasonic, thermal, carbon dioxide reduction and cut open carbon nanotubes. This technique uses heat to convert graphite dioxide to graphene. It has been gaining attention because of its low production costs. The current quality of graphene produced isn’t up to its theoretical potential, so it will take longer.
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