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

✍ Scribed by Young-Seon Ko; Young-Uk Kwon

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
612 KB
Volume
55
Category
Article
ISSN
0013-4686

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✦ Synopsis

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.

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