Origin of the current peak of negative scan in the cyclic voltammetry of methanol electro-oxidation on Pt-based electrocatalysts: a revisit to the current ratio criterion

Origin of the current peak of negative scan in the cyclic voltammetry of methanol electro-oxidation on Pt-based electrocatalysts: a revisit to the current ratio criterion

A popular criterion that uses the ratio between the peak currents of the respective positive (anodic) and negative (cathodic) potential scans, I sub(f)/I sub(b), in the cyclic voltammetry of methanol electro-oxidation to gauge CO-tolerance and catalytic activity of Pt-based electro-catalysts was rev...

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Veröffentlicht in:Journal of materials chemistry 2012-01, Vol.22 (11), p.5205-5208
Hauptverfasser: Hofstead-Duffy, Augusta M., Chen, De-Jun, Sun, Shi-Gang, Tong, YuYe J.
Format: Artikel
Sprache:eng
Schlagworte:
Anodic
Criteria
Electrocatalysts
Infrared radiation
Methyl alcohol
Origins
Platinum
Voltammetry
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Zusammenfassung:A popular criterion that uses the ratio between the peak currents of the respective positive (anodic) and negative (cathodic) potential scans, I sub(f)/I sub(b), in the cyclic voltammetry of methanol electro-oxidation to gauge CO-tolerance and catalytic activity of Pt-based electro-catalysts was revisited and its inadequacy was revealed by an in situsurface enhanced IR study.
ISSN:0959-9428
1364-5501
DOI:10.1039/c2jm15426a