Producción Científica Profesorado

Cobalt Electrodeposition Process from Electrolytic Baths based on CoSO4 and (NH4)2SO4. Influence of [Co(II)]



Mendoza Huizar, Luis Humberto

2009

Cobalt Electrodeposition Process from Electrolytic Baths based on CoSO4 and (NH4)2SO4. Influence of [Co(II)]". M. Granados-Neri, L.H. Mendoza-Huizar. ECS Transactions ECS Transactions (2009) Volume 20, pp- 375-383 ISSN: 1938-586


Abstract


In this work we carried out an electrochemical study of the cobalt electrodeposition from ammonium sulfate solutions (x CoSO4 + 1M (NH4)2SO4, where x=0.005, 0.01, 0.05 and 0.1M) onto glassy carbon electrode. From the potentiostatic study, it was obtained that the nucleation rate increases with the increment of cobalt in the plating bath. From our thermodynamic study we found that the [Co(H2O)6]2+ chemical specie was the predominant complex. The conditional equilibrium potential (Eq) depends on the cobalt concentration in the solution, thus an increase in [Co(II)] decreases the Eq. A clear linear tendency in the plot lnA vs E was observed for systems II and III. However, non linear plots were gotten for systems I and IV, indicating the existence of additional processes that affects the nucleation and growth mechanisms.



Producto de Investigación




Artículos relacionados

Quantum chemical study of the electrochemical reduction of the [Co(H2O)6]2+ and [Co(NH3)5(H2O)]2+ io...

Characterization of Main Anthocyanins Extracted from Pericarp Blue Corn by MALDI-ToF MS

Kinetics of Polypyrrole Films Doped with Sulphate Ions Electrodeposited Over Graphite - Epoxy Resin ...

Bioacumulación y daños genotóxicos en Pez Cebra (Danio rerio) por arsénico en aguas de Zimapán, Hida...

Synthesis, Characterization and Catalytic Activity of Supported NiMo Catalysts

Revisión de variables de diseño y condiciones de operación en la electrocoagulación

Hydrogen bond studies in substituted N-(2-hydroxyphenyl)--2-[(4-methylbenzenesulfonyl)amino]acetamid...

The role of temperature in copper electrocrystallization in ammoniachloride solutions

Estudio de las Interacciones Ácido Húmico-Metales Pesados y Determinación de sus Constantes de Estab...

Nucleation and growth of cobalt onto different substrates: Part I. Underpotential deposition onto a ...