JJ Velasco-Vélez
Electrochemically active Ir NPs on graphene for OER in acidic aqueous electrolyte investigated by in situ and ex situ spectroscopies
Velasco-Vélez, JJ; Jones, TE; Streibel, V; Hävecker, M; Chuang, CH; Frevel, L; Plodinec, M; Centeno, A; Zurutuza, A; Wang, R; Arrigo, R; Mom, R; Hofmann, S; Schlögl, R; Knop-Gericke, A
Authors
TE Jones
V Streibel
M Hävecker
CH Chuang
L Frevel
M Plodinec
A Centeno
A Zurutuza
R Wang
Dr Rosa Arrigo R.Arrigo@salford.ac.uk
Reader
R Mom
S Hofmann
R Schlögl
A Knop-Gericke
Abstract
An electrode for the oxygen evolution reaction based on a conductive bi-layered free standing graphene support functionalized with iridium nanoparticles was fabricated and characterized by means of potentiometric and advanced X-ray spectroscopic techniques. It was found that the electrocatalytic activity of iridium nanoparticles is associated to the formation of Ir 5d electron holes. Strong Ir 5d and O 2p hybridization, however, leads to a concomitant increase O 2p hole character, making oxygen electron deficient and susceptible to nucleophilic attack by water. Consequently, more efficient electrocatalysts can be synthesized by increasing the number of electron-holes shared between the metal d and oxygen 2p.
Citation
Velasco-Vélez, J., Jones, T., Streibel, V., Hävecker, M., Chuang, C., Frevel, L., …Knop-Gericke, A. (2018). Electrochemically active Ir NPs on graphene for OER in acidic aqueous electrolyte investigated by in situ and ex situ spectroscopies. Surface Science, 681(Mar 19), 1-8. https://doi.org/10.1016/j.susc.2018.10.021
Journal Article Type | Article |
---|---|
Acceptance Date | Oct 27, 2018 |
Online Publication Date | Oct 31, 2018 |
Publication Date | Oct 31, 2018 |
Deposit Date | Mar 26, 2019 |
Journal | Surface Science |
Print ISSN | 0039-6028 |
Publisher | Elsevier |
Volume | 681 |
Issue | Mar 19 |
Pages | 1-8 |
DOI | https://doi.org/10.1016/j.susc.2018.10.021 |
Publisher URL | https://doi.org/10.1016/j.susc.2018.10.021 |
Related Public URLs | https://www.sciencedirect.com/journal/surface-science/vol/681/suppl/C |
You might also like
In situ dynamics of carbon supported metal systems for carbon dioxide electroreduction
(2022)
Presentation / Conference
The versatile soft X-ray (VerSoX) beamline at diamond light source
(2022)
Journal Article
Downloadable Citations
About USIR
Administrator e-mail: library-research@salford.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search