| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1284865 | Journal of Power Sources | 2010 | 4 Pages |
Abstract
In this work we investigate the catalytic activity of PtRu electrodeposits of distinct atomic composition towards methanol oxidation as a function of the “aging” of the electrodes. Electrochemical results show that those compositions containing more Ru present a peak of activity during the aging, whilst Pt-rich deposits present a continuous deactivation. Results are interpreted in terms of a progressive deactivation of Ru sites, which emulates a continuous change in the atomic composition. The maxima observed for the electrodeposits correspond to the time needed to attain compositions located in the range of good activity for methanol oxidation.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Pamella Glajchman, Diogo H. Wordell, M. Janete Giz, Giuseppe A. Camara,