Electrochemical reduction of oxygen on thin-film. Au electrodes in acid solution

Authors
Sarapuu, A Tammeveski, K Tenno, TT Sammelselg, V Kontturi, K Schiffrin, DJ
Citation
A. Sarapuu et al., Electrochemical reduction of oxygen on thin-film. Au electrodes in acid solution, ELECTROCH C, 3(8), 2001, pp. 446-450
Citations number
23
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ELECTROCHEMISTRY COMMUNICATIONS
ISSN journal
13882481 → ACNP
Volume
3
Issue
8
Year of publication
2001
Pages
446 - 450
Database
ISI
SICI code
1388-2481(200108)3:8<446:EROOOT>2.0.ZU;2-O
Abstract
The reduction of oxygen has been studied on thin-film gold electrodes using the rotating disk electrode (RDE) technique. Thin films of gold were prepa red by vacuum evaporation onto glassy carbon and highly oriented pyrolytic graphite substrates. The surface morphology of the films was examined-by at omic force microscopy. The kinetic parameters of O-2 reduction have been de termined and a Tafel slope of (-112 +/- 8) mV dec(-1) was observed. The spe cific activity of the electrodes was almost independent of film thickness. (C) 2001 Elsevier Science B.V. All rights reserved.