English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
  The Electronic Structure of Iridium Oxide Electrodes Active in Water Splitting

Pfeifer, V., Jones, T., Velasco Vélez, J., Massué, C., Greiner, M., Arrigo, R., et al. (2016). The Electronic Structure of Iridium Oxide Electrodes Active in Water Splitting. Physical Chemistry Chemical Physics, 18(4), 2292-2296. doi:10.1039/C5CP06997A.

Item is

Files

show Files
hide Files
:
c5cp06997a.pdf (Publisher version), 3MB
Name:
c5cp06997a.pdf
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
2015
Copyright Info:
RSC

Locators

show

Creators

show
hide
 Creators:
Pfeifer, Verena1, 2, Author              
Jones, Travis1, Author              
Velasco Vélez, Juan1, 3, Author              
Massué, Cyriac1, 3, Author              
Greiner, Mark1, Author              
Arrigo, Rosa4, Author
Teschner, Detre1, Author              
Girgsdies, Frank1, Author              
Scherzer, Michael1, 3, Author              
Allan, Jasmin1, Author              
Hashagen, Maike1, Author              
Weinberg, Gisela1, Author              
Piccinin, Simone5, Author
Hävecker, Michael1, 3, Author              
Knop-Gericke, Axel1, Author              
Schlögl, Robert1, 3, Author              
Affiliations:
1Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
2Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Elektronenspeicherring BESSY II, Albert-Einstein-Str. 15, 12489 Berlin, Germany, ou_persistent22              
3Max-Planck-Institut für Chemische Energiekonversion, Stiftstr. 34-36, 45470 Mülheim a. d. Ruhr, Germany, ou_persistent22              
4Diamond Light Source Ltd, Harwell Science & Innovation Campus, Didcot, Oxfordshire OX 11 0DE, UK, ou_persistent22              
5Instituto Officina dei Materiali (CNR-IOM), c/o SISSA –Scoula Internazionale Superiore di Studi Avanzati, Via Bonomea 267, 34136 Trieste, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: Iridium oxide based electrodes are among the most promising candidates for electrocatalyzing the oxygen evolution reaction, making it imperative to understand their chemical/electronic structure. However, the complexity of iridium oxide’s electronic structure makes it particularly difficult to experimentally determine the chemical state of the active surface species. To achieve an accurate understanding of the electronic structure of iridium oxide surfaces, we have combined synchrotron-based X-ray photoemission and absorption spectroscopies with ab-initio calculations. Our investigation reveals a pre-edge feature in the O K-edge of highly catalytically active X-ray amorphous iridium oxides that we have identified as O 2p hole states forming in conjunction with IrIII. These electronic defects in the near-surface region of the anionic and cationic framework are likely critical for the enhanced activity of amorphous iridium oxides relative to their crystalline counterparts.

Details

show
hide
Language(s): eng - English
 Dates: 2015-11-152015-12-212015-12-212016-01-28
 Publication Status: Published in print
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1039/C5CP06997A
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Physical Chemistry Chemical Physics
  Abbreviation : Phys. Chem. Chem. Phys.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Cambridge, England : Royal Society of Chemistry
Pages: 5 Volume / Issue: 18 (4) Sequence Number: - Start / End Page: 2292 - 2296 Identifier: ISSN: 1463-9076
CoNE: https://pure.mpg.de/cone/journals/resource/954925272413_1