Electrodeposition of Cobalt from Eutectic-Based Ionic Liquid

Authors

Rostom Ali M., Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi-6205, Bangladesh;Follow
Sankar Saha S, Department of Chemistry, Rajshahi University of Engineering and Technology, Rajshahi-6204, Bangladesh;
Ziaur Rahman Md, Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi-6205, Bangladesh;Shamsur Rahman Model College, Faridpur, Pabna, Bangladesh;

Corresponding Author

Rostom Ali M.(dmrali@yahoo.com )

Abstract

The electrodeposition of cobalt from a solution containing cobalt chloride in either a urea-choline chloride based or an ethylene glycol (EG)-choline chloride based ionic liquid has been carried out onto copper and steel cathodes by constant current and constant potential methods at different temperatures. The influences of various experimental conditions on electrodeposition and morphology of the deposited layers have been investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD)technique. It has been shown that the smooth, shiny with good adherence and bright metallic coloured cobalt coatings were obtained from both urea and EG based ionic liquids at the applied deposition potentials up to -0.8 V and applied deposition current densities up to -6.0 A·m^-2 by the addition of 0.05 mol·L^-1 P₂O₅ at temperatures ranging from 30 to 90 ℃. The cathodic current efficiency for the deposition of cobalt reached 98%.

Keywords

electrodeposition, reline, ethaline, cobalt, cyclic voltammetry

DOI Link

https://doi.org/10.13208/j.electrochem.161123

Publication Date

2018-10-28

Online Available Date

2018-05-25

Revised Date

2017-06-16

Received Date

2016-11-23

Recommended Citation

Rostom Ali M., Sankar Saha S, Ziaur Rahman Md. Electrodeposition of Cobalt from Eutectic-Based Ionic Liquid[J]. Journal of Electrochemistry, 2018 , 24(5): 546-554.
DOI: 10.13208/j.electrochem.161123
Available at: https://jelectrochem.xmu.edu.cn/journal/vol24/iss5/12