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Description
An in-depth study of previously data for the synthesis of new carbon nanostructures is made. The Raman spectra and electron microscopy images obtained were analyzed to give a physical interpretation and a possible application related to electrical charge in storage systems. By using the experimental pulsed electric arc discharge method with a spinning anode (PEADSA), pulsed discharge was performed. The angular velocity and the geometric configuration of the spinning anode were controlled and using these parameters, the electric discharge frequency, the length of the discharge time and no discharge time were regulated. Elemental sulfur powder in a sulfur rich catalytic mixture containing 93.84/2.56/1.43/0.69/1.48 of C/Ni/Fe/Co/S in mole fraction was used. A low-pressure hydrogen atmosphere (100 Torr), an angular velocity of 600 rpm and a discharge frequency of 80 Hz were employed. The catalytic mixture was disposed in sixteen alternating cavities, eight filled, eight empty. Two types of multi-walled carbon nanotubes deposited depending on the electrode were found. Mainly multi-walled carbon nanotubes (MWCNTS) with an average diameter of 60 nm and few microns in length were observed at the anode. On the other hand, MWCNTS of smaller diameters and lengths of several microns were found at the cathode. Both nanotubes were decorated with carbon disulfide. The disulfide that decorated the nanotubes had an oval shape with an average dimension of 15 nm along the surfaces of carbon nanotubes.
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| Keywords | Energy storage systems, MWCNT, Arc discharge method. |
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| Author approval | I confirm |
| Author will attend | I confirm |
