Carbon nanotubes, also known as Bucky tubes, are one-dimensional quantum materials with a special structure (nanometer scale in radial dimensions, micron scale in axial dimensions, and essentially sealed at both ends of the tube). Carbon nanotubes are mainly composed of carbon atoms arranged in a hexagonal shape to form a coaxial circular tube with several to tens of layers. The distance between the layers is fixed at about 0.34 nm, and the diameter is generally 2-20 nm, and the carbon hexagon can be divided into serrated, armchair and spiral types according to their different orientations along the axial direction. The helical carbon nanotubes have chirality, while the sawtooth and armchair carbon nanotubes have no chirality.
The role of carbon nanotubes uses
1, carbon nanotubes can be made into transparent conductive film, used instead of ITO (indium tin oxide) as a touch screen material. Previous technology, scientists use powdered carbon nanotubes into a solution, directly coated on PET or glass substrates, but such technology has not entered the mass production stage.
2, carbon nanotubes can be applied to carbon nanotube touch screen. Carbon nanotube touch screen was first developed successfully in 2008, and so far there are several smart phones using carbon nanotube material made of touch screen.
3. Carbon nanotubes can be used as molds. Inside the carbon nanotubes can be filled with metals, oxides and other substances, so that carbon nanotubes can be used as a mold, first fill the carbon nanotubes with metals and other substances, you can prepare the finest nano-scale wire.
4、Carbon nanotubes can be used as electrode materials for electric double-layer capacitors. Electric double-layer capacitor can be used as both a capacitor and an energy storage device. Supercapacitor can be charged and discharged with high current, almost no charge/discharge overvoltage, cycle life up to tens of thousands of times, and a wide operating temperature range