Electrochemical deposition of platinum on fluorine-doped tin oxide: The nucleation mechanisms

We report the electrochemical formation of Pt particles on fluorine-doped tin oxide electrodes by varying the concentration of PtCl 4 2− ions and the overpotentials within the mass-transfer-limited region. The nucleation mechanisms are considered based on the results obtained by cyclic voltammetry,...

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Bibliographic Details
Published in:Electrochimica acta 2010-10, Vol.55 (24), p.7276-7281
Main Authors: Ko, Young-Seon, Kwon, Young-Uk
Format: Article
Language:English
Subjects:
Chemistry
Density
Deposition
Electrochemical deposition
Electrochemistry
Electrodeposition
Electrodes
Exact sciences and technology
Fluorine-doped tin oxide
General and physical chemistry
Mass-transfer-controlled
Nucleation
Nucleation mechanism
Physical properties
Platinum
Study of interfaces
Tin oxides
Voltammetry
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Summary:We report the electrochemical formation of Pt particles on fluorine-doped tin oxide electrodes by varying the concentration of PtCl 4 2− ions and the overpotentials within the mass-transfer-limited region. The nucleation mechanisms are considered based on the results obtained by cyclic voltammetry, chronoamperometry, and scanning electron microscopy; the nucleation mechanism changes from progressive to instantaneous as the overpotential and the concentration increase. The physical properties of deposited Pt particles, such as particle density, size, and morphology, are also studied with the changes in overpotential, concentration of PtCl 4 2− ions, or both.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2010.07.009