Modeling the Charge-Transfer Resistance to Determine the Role of Guar and Activated Polyacrylamide in Copper Electrodeposition - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of The Electrochemical Society Année : 2009

Modeling the Charge-Transfer Resistance to Determine the Role of Guar and Activated Polyacrylamide in Copper Electrodeposition

C. P. Fabian
  • Fonction : Auteur
M. J. Ridd
  • Fonction : Auteur
M. E. Sheehan
  • Fonction : Auteur

Résumé

In this paper, we explore the effects of two organic additives (guar and a selectively hydrolyzed polyacrylamide) in the presence of chloride ions on copper electrodeposition using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) at a rotating cylinder electrode (RCE). This paper also demonstrates that the CV and EIS results are consistent and that the selectively hydrolyzed polyacrylamide, "activated polyacrylamide" (APAM), acts as a suppressor/inhibitor at the cathode/ electrolyte interface, whereas guar does not. This paper presents an EIS measurement model for the effect of APAM + Cl- on a copper cathode. The EIS model was applied to data obtained at a potential of -470 mV vs a mercurous-mercuric sulfate reference electrode (MSE) at 45 °C. A comparison between the effect of APAM + Cl- and guar + Cl- was conducted at -490 mV (vs MSE) at 45°C. APAM + Cl- was also investigated at -445 mV (vs MSE) at 65°C. EIS was used to determine the effect of APAM + Cl- or guar + Cl- aging on the charge-transfer resistance using the RCE. CV was used to determine their effect on the polarization of the electrode. The EIS and CV results are consistent.
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Dates et versions

hal-00715858 , version 1 (09-07-2012)

Identifiants

  • HAL Id : hal-00715858 , version 1

Citer

C. P. Fabian, M. J. Ridd, M. E. Sheehan, Ph. Mandin. Modeling the Charge-Transfer Resistance to Determine the Role of Guar and Activated Polyacrylamide in Copper Electrodeposition. Journal of The Electrochemical Society, 2009, vol. 156 (no10), pp.D400-D407. ⟨hal-00715858⟩

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