PULSE REVERSE ELECTRODEPOSITION OF SPHERICAL Ni-MWCNT COMPOSITE SKEIN

Watt s bath and pulse reverse (PR) electrodeposition is used to produce spherical nickelmulti wall carbon nanotubes (Ni-MWCNT) of 2.00, 0.93, 1.63 and 6.71 urn diameter and a variety of size distributions. For 60 cycles, an absolute electrodeposition current of 18 A/dm^2 is applied at current ratios of ii = i(dissolution)/i(deposition) = 0, 0.077, 0.200 and 0.368. A simple exponential equation is fitted to each pulse response by a resistance-capacitance (RC) simple model giving different time constants usable for diagnosing the effect of different parameters. Results show that PR electrodeposition is capable of producing microspherical Ni-MWCNT composite skeins of different diameters and size distributions. This could be identified with the time constant of the process.