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Hydrogen-Induced Step-Edge Roughening of Platinum Electrode Surfaces
[Image: see text] Electrode surfaces may change their surface structure as a result of the adsorption of chemical species, impacting their catalytic activity. Using density functional theory, we find that the strong adsorption of hydrogen at low electrode potentials promotes the thermodynamics and k...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical
Society
2019
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6844181/ https://www.ncbi.nlm.nih.gov/pubmed/31618039 http://dx.doi.org/10.1021/acs.jpclett.9b02544 |
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author | McCrum, Ian T. Bondue, Christoph J. Koper, Marc T. M. |
author_facet | McCrum, Ian T. Bondue, Christoph J. Koper, Marc T. M. |
author_sort | McCrum, Ian T. |
collection | PubMed |
description | [Image: see text] Electrode surfaces may change their surface structure as a result of the adsorption of chemical species, impacting their catalytic activity. Using density functional theory, we find that the strong adsorption of hydrogen at low electrode potentials promotes the thermodynamics and kinetics of a unique type of roughening of 110-type Pt step edges. This change in surface structure causes the appearance of the so-called “third hydrogen peak” in voltammograms measured on Pt electrodes, an observation that has eluded explanation for over 50 years. Understanding this roughening process is important for structure-sensitive (electro)catalysis and the development of active and stable catalysts. |
format | Online Article Text |
id | pubmed-6844181 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | American Chemical
Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-68441812019-11-12 Hydrogen-Induced Step-Edge Roughening of Platinum Electrode Surfaces McCrum, Ian T. Bondue, Christoph J. Koper, Marc T. M. J Phys Chem Lett [Image: see text] Electrode surfaces may change their surface structure as a result of the adsorption of chemical species, impacting their catalytic activity. Using density functional theory, we find that the strong adsorption of hydrogen at low electrode potentials promotes the thermodynamics and kinetics of a unique type of roughening of 110-type Pt step edges. This change in surface structure causes the appearance of the so-called “third hydrogen peak” in voltammograms measured on Pt electrodes, an observation that has eluded explanation for over 50 years. Understanding this roughening process is important for structure-sensitive (electro)catalysis and the development of active and stable catalysts. American Chemical Society 2019-10-16 2019-11-07 /pmc/articles/PMC6844181/ /pubmed/31618039 http://dx.doi.org/10.1021/acs.jpclett.9b02544 Text en Copyright © 2019 American Chemical Society This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License (http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html) , which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes. |
spellingShingle | McCrum, Ian T. Bondue, Christoph J. Koper, Marc T. M. Hydrogen-Induced Step-Edge Roughening of Platinum Electrode Surfaces |
title | Hydrogen-Induced Step-Edge Roughening of Platinum
Electrode Surfaces |
title_full | Hydrogen-Induced Step-Edge Roughening of Platinum
Electrode Surfaces |
title_fullStr | Hydrogen-Induced Step-Edge Roughening of Platinum
Electrode Surfaces |
title_full_unstemmed | Hydrogen-Induced Step-Edge Roughening of Platinum
Electrode Surfaces |
title_short | Hydrogen-Induced Step-Edge Roughening of Platinum
Electrode Surfaces |
title_sort | hydrogen-induced step-edge roughening of platinum
electrode surfaces |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6844181/ https://www.ncbi.nlm.nih.gov/pubmed/31618039 http://dx.doi.org/10.1021/acs.jpclett.9b02544 |
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