The DOI matches its Crossref record; 44 of the 44 references it cites were found in a registry or an index.
Methanol Electro-Oxidation on the Pt Surface: Revisiting the Cyclic Voltammetry Interpretation
Abstract
Methanol is a promising fuel for direct methanol fuel cells in portable devices. A deeper understanding of its electro-oxidation is needed for evaluating electrocatalytic performance and catalyst design. Here we provide an in-depth investigation of the cyclic voltammetry (CV) of methanol electro-oxidation. The oxidation peak in backward scan is shown to be unrelated to residual intermediate oxidation. The origin of the second oxidation peak (I f2 ) is expected to the methanol oxidation on Pt–O x . Electrochemical impedance spectroscopy coupled with CV reveals the origin of CV hysteresis to be a shift in the rate-determining step, from methanol dehydration to OH adsorption by water dissociation, induced by a change in Pt surface coverage with oxygenated species. The peak ratio between forward oxidation peak current (I f ) and backward oxidation peak current (I b ), which is I f /I b, is not related to the degree of CO tolerance but to the degree of oxophilicity indeed.
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Cites
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Impedance Analysis of Electrochemical Systems
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Metadata
- Authors
- Chung, D. Y., Lee, K.-J., & Sung, Y.-E.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-04-27
- Volume
- 120
- Issue
- 17
- Pages
- 9028-9035
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2339019739
- Cited by
- 346
- References
- 44
- FWCI
- 9.30
- Type
- journal article
- Language
- en
- Open access
- closed
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- Chung, D. Y., Lee, K.-J., & Sung, Y.-E. (2016). Methanol Electro-Oxidation on the Pt Surface: Revisiting the Cyclic Voltammetry Interpretation. The Journal of Physical Chemistry C. https://doi.org/10.1021/acs.jpcc.5b12303
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