DC Field | Value | Language |
---|---|---|
dc.contributor.author | Chung, Dong Young | ko |
dc.contributor.author | Lee, Kyung-Jae | ko |
dc.contributor.author | Sung, Yung-Eun | ko |
dc.date.accessioned | 2022-07-04T08:01:33Z | - |
dc.date.available | 2022-07-04T08:01:33Z | - |
dc.date.created | 2022-07-04 | - |
dc.date.issued | 2016-05 | - |
dc.identifier.citation | JOURNAL OF PHYSICAL CHEMISTRY C, v.120, no.17, pp.9028 - 9035 | - |
dc.identifier.issn | 1932-7447 | - |
dc.identifier.uri | http://hdl.handle.net/10203/297210 | - |
dc.description.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. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Methanol Electro-Oxidation on the Pt Surface: Revisiting the Cyclic Voltammetry Interpretation | - |
dc.type | Article | - |
dc.identifier.wosid | 000375631100003 | - |
dc.identifier.scopusid | 2-s2.0-84969277894 | - |
dc.type.rims | ART | - |
dc.citation.volume | 120 | - |
dc.citation.issue | 17 | - |
dc.citation.beginningpage | 9028 | - |
dc.citation.endingpage | 9035 | - |
dc.citation.publicationname | JOURNAL OF PHYSICAL CHEMISTRY C | - |
dc.identifier.doi | 10.1021/acs.jpcc.5b12303 | - |
dc.contributor.localauthor | Chung, Dong Young | - |
dc.contributor.nonIdAuthor | Lee, Kyung-Jae | - |
dc.contributor.nonIdAuthor | Sung, Yung-Eun | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | OXYGEN REDUCTION REACTION | - |
dc.subject.keywordPlus | ROTATING-DISK ELECTRODE | - |
dc.subject.keywordPlus | PT-RU | - |
dc.subject.keywordPlus | ELECTROCATALYTIC ACTIVITY | - |
dc.subject.keywordPlus | OXIDATION REACTION | - |
dc.subject.keywordPlus | FUEL-CELL | - |
dc.subject.keywordPlus | IMPEDANCE SPECTROSCOPY | - |
dc.subject.keywordPlus | CARBON-MONOXIDE | - |
dc.subject.keywordPlus | PLATINUM | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
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