Journal of Electroanalytical Chemistry, volume 644, issue 2, pages 110-116
The CO tolerance pathways on the Pt–Ru electrocatalytic system
1
Instituto de Química de São Carlos/USP, C. P. 780, 13560-970 São Carlos, SP, Brazil
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Publication type: Journal Article
Publication date: 2010-06-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 4.5
ISSN: 15726657
General Chemical Engineering
Analytical Chemistry
Electrochemistry
Abstract
This work presents results of the studies of the CO tolerance of Pt/C, Ru/C, Pt/C + Ru/C and PtRu/C forming different electrode assemblies for the hydrogen oxidation reaction (HOR) in polymer electrolyte fuel cells. Anodes consisting of the physical mixtures of Pt/C + Ru/C in two distinct configurations were used to elucidate the Ru effects on the HOR electrocatalysis of Pt in the presence of CO. The results showed that at low anode overpotentials the CO tolerance for the PtRu/C catalysts is promoted by an electronic effect of Ru on Pt, while at high overpotentials, the CO tolerance is enhanced by the occurrence of the water splitting reaction and the CO oxidation taking place via the Langmuir–Hinshelwood mechanism. The results also demonstrate the occurrence of spontaneous oscillatory behavior of the anode potential and the oscillatory production of CO 2 , as monitored by on-line mass spectrometry (EMS) at the anode gas outlet. Evidences of the occurrence of a CO methanation reaction under the fuel cell environment are also given.
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Citations by publishers
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1 publication, 2.38%
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1 publication, 2.38%
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1 publication, 2.38%
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5
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15
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25
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Lopes P. P., Ticianelli E. A. The CO tolerance pathways on the Pt–Ru electrocatalytic system // Journal of Electroanalytical Chemistry. 2010. Vol. 644. No. 2. pp. 110-116.
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Lopes P. P., Ticianelli E. A. The CO tolerance pathways on the Pt–Ru electrocatalytic system // Journal of Electroanalytical Chemistry. 2010. Vol. 644. No. 2. pp. 110-116.
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TY - JOUR
DO - 10.1016/j.jelechem.2009.06.011
UR - https://doi.org/10.1016/j.jelechem.2009.06.011
TI - The CO tolerance pathways on the Pt–Ru electrocatalytic system
T2 - Journal of Electroanalytical Chemistry
AU - Lopes, Pietro P.
AU - Ticianelli, Edson A.
PY - 2010
DA - 2010/06/01 00:00:00
PB - Elsevier
SP - 110-116
IS - 2
VL - 644
SN - 1572-6657
ER -
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@article{2010_Lopes,
author = {Pietro P. Lopes and Edson A. Ticianelli},
title = {The CO tolerance pathways on the Pt–Ru electrocatalytic system},
journal = {Journal of Electroanalytical Chemistry},
year = {2010},
volume = {644},
publisher = {Elsevier},
month = {jun},
url = {https://doi.org/10.1016/j.jelechem.2009.06.011},
number = {2},
pages = {110--116},
doi = {10.1016/j.jelechem.2009.06.011}
}
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Lopes, Pietro P., and Edson A. Ticianelli. “The CO tolerance pathways on the Pt–Ru electrocatalytic system.” Journal of Electroanalytical Chemistry, vol. 644, no. 2, Jun. 2010, pp. 110-116. https://doi.org/10.1016/j.jelechem.2009.06.011.