TY - GEN
T1 - Voltammetric modeling of the kinetics involved in the nickel deposition onto nickel
AU - Vazquez-Arenas, Jorge
AU - Altamirano-Garcia, Liliana
AU - Luna-Sánchez, Rosa María
AU - Cabrera-Sierra, Roman
PY - 2010
Y1 - 2010
N2 - A comprehensive physicochemical model is used to account for the nickel electrodeposition in sulfate media employing a rotating disk electrode. The model accounts for the nickel deposition, H+ and water reduction. These reactions involve the reduction of Ni(II) by two consecutive 1-electron transfer steps and the H+ and water reduction via the two-step Volmer-Tafel mechanism. Diffusion and convection are considered in the mass-transport balances. Reasonable fits of the model to the experimental data were obtained at different NiSO4 concentrations. Further insights of this system show that the reduction process starting from the open circuit potential to more negative potentials occurs in the following order: H + reduction, nickel deposition and water reduction. The computation of other variables involved in the model such as the surface pH and concentrations provide additional support to those finds elucidated with the model.
AB - A comprehensive physicochemical model is used to account for the nickel electrodeposition in sulfate media employing a rotating disk electrode. The model accounts for the nickel deposition, H+ and water reduction. These reactions involve the reduction of Ni(II) by two consecutive 1-electron transfer steps and the H+ and water reduction via the two-step Volmer-Tafel mechanism. Diffusion and convection are considered in the mass-transport balances. Reasonable fits of the model to the experimental data were obtained at different NiSO4 concentrations. Further insights of this system show that the reduction process starting from the open circuit potential to more negative potentials occurs in the following order: H + reduction, nickel deposition and water reduction. The computation of other variables involved in the model such as the surface pH and concentrations provide additional support to those finds elucidated with the model.
UR - http://www.scopus.com/inward/record.url?scp=79959666346&partnerID=8YFLogxK
U2 - 10.1149/1.3532311
DO - 10.1149/1.3532311
M3 - Contribución a la conferencia
AN - SCOPUS:79959666346
SN - 9781607682110
T3 - ECS Transactions
SP - 135
EP - 143
BT - MES 25
T2 - 25th National Meeting of the Mexican Electrochemical Society, MES and the 3rd Meeting of the Mexican Section of the Electrochemical Society, ECS
Y2 - 31 May 2010 through 4 June 2010
ER -