Performance of Multi walled carbon nanotubes

Electrical performance

        Each carbon atom of the sp2 hybrid has an unpaired electron perpendicular to the pi orbital of the sheet, which gives carbon nanotubes excellent electrical conductivity. The maximum current density of carbon nanotubes can reach 109Acm-2, which is 1000 times the conductivity of copper. It can be used as a very small wire, the typical application is currently used as a conductive agent in lithium-ion batteries. The semiconducting carbon nanotubes have wider applications in the field of microelectronic devices.

Mechanical properties

        sp2 hybrid C-C σ bond is one of the strongest chemical bonds known at present. The yield strength of carbon nanotubes is in the order of hundreds of GPa, and the Young's modulus is in the order of TPa, which is much higher than that of carbon fiber and body armor. Use fiber and steel. It is expected to replace carbon fiber as a new strength material.

Thermal performance

        The carbon nanotube heat conduction system has a larger average phonon free path, and the axial thermal conductivity can be as high as 6600W / (m · K), which is more than 3 times the material with the highest thermal conductivity at room temperature-diamond, which is in nature The highest known material is an efficient heat dissipation material in electronic equipment.

In recent years, the research of carbon nanotubes has demonstrated the application prospects in nanoelectronic devices, that is, by building electronic devices and wires based on carbon nanotubes with a size of only tens of nanometers or even smaller, the realization speed is much faster The power consumption is much smaller than the carbon nanotube integrated circuits of current integrated circuits。

Also MWCNT multi-walled carbon nanotubes can be applied for conductive, anti-static, catalyst carrier, etc.