Study on the cathode deposit produced in the process of carbon arc discharge

The cathode deposit produced by carbon arc discharge was studied by scanning electron microscopy, high resolution electron microscopy, x-ray diffraction and Raman spectroscopy. The results indicate that the stacking of hexagonal carbon layer in the discharged graphite is different from the ABAB stacking sequence in graphite, and that carbon nanotube is a kind of graphite-like micro-crystal with a low-dimensional structure.