Electrocatalytic properties of ultrafine platinum particles for hydrogen electrode reaction in an aqueous solution of sulfuric acid

Effects of platinum particle size on the hydrogen electrode reaction have been examined in an aqueous solution of sulfuric acid by use of a Pt/GC model catalyst electrode which was prepared by vacuum evaporation of platinum onto a flat surface of a glassy carbon rod support. With decreasing the plat...

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Bibliographic Details
Published in:Electrochimica acta 1989-03, Vol.34 (3), p.453-458
Main Authors: Takasu, Yoshio, Fujii, Yuichi, Yasuda, Kōzō, Iwanaga, Yukinori, Matsuda, Yoshiharu
Format: Article
Language:English
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Summary:Effects of platinum particle size on the hydrogen electrode reaction have been examined in an aqueous solution of sulfuric acid by use of a Pt/GC model catalyst electrode which was prepared by vacuum evaporation of platinum onto a flat surface of a glassy carbon rod support. With decreasing the platinum particle size, the ratio of the amount of strongly adsorbed hydrogen over the surface of platinum particles decreased, while the exchange current density of hydrogen evolution reaction increased.
ISSN:0013-4686
1873-3859
DOI:10.1016/0013-4686(89)87025-2