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Graphene is a two-dimensional crystal, the common people of the graphite is plane carbon atoms stacked by a layer with honeycomb ordered formed, graphite layer interaction is weak, it is easy to form each other off, graphite sheet. When the graphite sheet is stripped into a single layer, it is only a single layer of carbon atoms. The latest discovery of graphene is one of the most effective ways to prevent corrosion. Commonly used polymer coating is very easy to be scratched, reduce the protection performance; and graphene to do the protective film, significantly slow down the corrosion rate of metal, more robust anti damage. Graphene is not only used in the electronics industry star, traditional industry prospects are limitless.…
Graphite is a covalent semiconductor and metal intermediate half of the metal, inherently good conductivity, thermal conductivity, and most of the molten metal does not react, high temperature state is not deformed (up to 27.. C) and with the temperature increases the electrical conductivity and thermal conductivity, strength is significantly increased (mechanical strength at 1800 C is two times at room temperature), low thermal expansion coefficient than metal, as the ideal material can be widely used in powder sintering industry. The use of graphite mold powder sintering industry began in the early 70s, accompanied by geological exploration, coal exploration and mining, oil exploration and drilling, highway cutting, especially the rapid development of granite and marble mining and cutting industry, demand…
The small capacity of the battery has been successfully applied in human life, further research and development of new environmentally friendly battery suitable for large-scale energy storage, development and utilization of new energy sources, will have great social and economic significance. All vanadium redox flow battery can be regarded as the representative of the new energy storage battery, compared with other batteries and it has a unique advantage, and therefore by researchers at home and abroad. At present, the vanadium battery has been abroad applied to wind power plant, power station power peaking and solar photovoltaic demonstration operation. But the development of vanadium battery is still limited, the electrode material is a very important factor. The electrode material is mainly…
