Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 6, Issue 8, Pages 812-815Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2004.06.001
Keywords
electrocatalysis; ethanol electrooxidation; FTIR; fuel cell; PtRu electrodeposits
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Funding
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [02/14211-9] Funding Source: FAPESP
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The catalytic activity for ethanol oxidation is studied as a function of the atomic composition of PtRu electrodeposits. Chronoamperometric curves taken at 0.5 V show that the current for ethanol oxidation at PtRu electrodeposits, measured 30 min after the application of a potential step from 0.05 V, increases in the presence of Ru up to a Ru content of about 40%. The highest value observed at 0.5 V vs. RHE was 30 muA/cm(2) at 25 degreesC. There is a relatively narrow range of PtRu compositions that present a high rate of ethanol oxidation. Pure Ru has no activity towards ethanol oxidation at room temperature. (C) 2004 Elsevier B.V. All rights reserved.
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