Copper electrodeposition on pyrolytic graphite electrodes:: Effect of the copper salt on the electrodeposition process

被引:51
作者
Ghodbane, Ouassim
Roue, Lionel
Belanger, Daniel
机构
[1] Univ Quebec, Dept Chim, Montreal, PQ H3C 3P8, Canada
[2] INRS Energie Mat & Telecommun, Varennes, PQ J3X 1S2, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
copper; electrodeposition; pyrolytic graphite; sulfate adsorption; nucleation and growth;
D O I
10.1016/j.electacta.2007.03.009
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The electrodeposition of copper on pyrolytic graphite from CUSO4 or Cu(NO3)(2) in a 1.8 M H2SO4 aqueous solution was investigated. The Cu deposits were formed potentiostatically and characterized by electrochemical methods, scanning electron microscopy, energy dispersive X-ray and X-ray photoelectron spectroscopy. It was found that the deposition of copper in the presence of CUSO4 induced the codeposition of sulfate anions. In addition, electrochemical quartz crystal microbalance revealed that the increase of the Cu mass was higher than expected from Faraday's law with the CUSO4/H2SO4 solution. These results confirmed the specific adsorption of anions during the Cu deposition. On the other hand, the use of Cu(NO3)(2) resulted in a non-contaminated surface with different surface morphologies. The Cu nuclei size, the population density and the surface coverage were monitored as a function of the deposition potential. From the analysis of the chronoamperometric curves, the nucleation kinetics was studied by using various theoretical models. Independently of the Cu source, the nucleation mechanism follows a three-dimensional (3D) process. Copper nucleates according to an instantaneous mode when the deposition potential is more negative than -300mV versus Ag/AgCl, while the nucleation was interpreted in terms of a progressive mode at -150 mV. The nuclei population densities were also determined by using two common fitting models for 3D nucleation and growth (Scharifker-Mostany and Mirkin-Nilov-Heerman-Tarallo). Their values are reported here as a function of the deposition potential. Crown Copyright (C) 2007 Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:5843 / 5855
页数:13
相关论文
共 55 条
  • [1] In situ infrared study of water-sulfate coadsorption on gold(111) in sulfuric acid solutions
    Ataka, K
    Osawa, M
    [J]. LANGMUIR, 1998, 14 (04) : 951 - 959
  • [2] Carbons as supports for industrial precious metal catalysts
    Auer, E
    Freund, A
    Pietsch, J
    Tacke, T
    [J]. APPLIED CATALYSIS A-GENERAL, 1998, 173 (02) : 259 - 271
  • [3] Oxygen reduction and hydrogen evolution-oxidation reactions on Cu(hkl) surfaces
    Brisard, G
    Bertrand, N
    Ross, PN
    Markovic, NM
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2000, 480 (1-2): : 219 - 224
  • [4] In-situ STM investigation of specific anion adsorption on Cu(111)
    Broekmann, P
    Wilms, M
    Kruft, M
    Stuhlmann, C
    Wandelt, K
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1999, 467 (1-2): : 307 - 324
  • [5] Rhodium electrodeposition on pyrolytic graphite electrode:: Analysis of chronoamperometric curves
    Brylev, O
    Roué, L
    Bélanger, D
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2005, 581 (01): : 22 - 30
  • [6] Electrochemical measurement of the oxygen diffusivity and solubility in concentrated alkaline media on rotating ring-disk and disk electrodes - application to industrial chlorine-soda electrolyte
    Chatenet, M
    Aurousseau, M
    Durand, R
    [J]. ELECTROCHIMICA ACTA, 2000, 45 (17) : 2823 - 2827
  • [7] A novel method of etching copper oxide using acetic acid
    Chavez, KL
    Hess, DW
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (11) : G640 - G643
  • [8] Initial stages of copper electrocrystallization on a glassy-carbon ring-disk electrode from sulfate electrolytes of various acidity: A cyclic voltammetry study
    Danilov, AI
    Molodkina, EB
    Polukarov, YM
    [J]. RUSSIAN JOURNAL OF ELECTROCHEMISTRY, 2002, 38 (07) : 732 - 742
  • [9] Electrocatalytic reduction of NO3- on palladium/copper electrodes
    de Vooys, ACA
    van Santen, RA
    van Veen, JAR
    [J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2000, 154 (1-2) : 203 - 215
  • [10] UNDERPOTENTIAL METAL-DEPOSITION ON GOLD, MONITORED INSITU WITH A QUARTZ MICROBALANCE
    DEAKIN, MR
    MELROY, O
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1988, 239 (1-2): : 321 - 331