Characterization of Pt-PdC Electrocatalyst for Methanol Oxidation in Alkaline Medium
Joint Authors
Source
International Journal of Electrochemistry
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-10-04
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
The Pt-Pd/C electrocatalyst was synthesized on graphite substrate by the electrochemical codeposition technique.
The physicochemical characterization of the catalyst was done by SEM, XRD, and EDX.
The electrochemical characterization of the Pt-Pd/C catalyst for methanol electro-oxidation was studied over a range of NaOH and methanol concentrations using cyclic voltammetry, quasisteady-state polarization, chronoamperometry, and electrochemical impedance spectroscopy.
The activity of methanol oxidation increased with pH due to better OH species coverage on the electrode surface.
At methanol concentration (>1.0 M), there is no change in the oxidation peak current density because of excess methanol at the electrode surface and/or depletion of OH− at the electrode surface.
The Pt-Pd/C catalyst shows good stability and the low value of Tafel slope and charge transfer resistance.
The enhanced electrocatalytic activity of the electrodes is ascribed to the synergistic effect of higher electrochemical surface area, preferred OH− adsorption, and ad-atom contribution on the alloyed surface.
American Psychological Association (APA)
Mahapatra, S. S.& Datta, J.. 2011. Characterization of Pt-PdC Electrocatalyst for Methanol Oxidation in Alkaline Medium. International Journal of Electrochemistry،Vol. 2011, no. 2011, pp.1-16.
https://search.emarefa.net/detail/BIM-481060
Modern Language Association (MLA)
Mahapatra, S. S.& Datta, J.. Characterization of Pt-PdC Electrocatalyst for Methanol Oxidation in Alkaline Medium. International Journal of Electrochemistry No. 2011 (2011), pp.1-16.
https://search.emarefa.net/detail/BIM-481060
American Medical Association (AMA)
Mahapatra, S. S.& Datta, J.. Characterization of Pt-PdC Electrocatalyst for Methanol Oxidation in Alkaline Medium. International Journal of Electrochemistry. 2011. Vol. 2011, no. 2011, pp.1-16.
https://search.emarefa.net/detail/BIM-481060
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-481060