Nesselberger, M.; Arenz, Matthias (2016). InSitu FTIR Spectroscopy: Probing the Electrochemical Interface during the Oxygen Reduction Reaction on a Commercial Platinum High-Surface-Area Catalyst. ChemCatChem, 8(6), pp. 1125-1131. WILEY-VCH 10.1002/cctc.201501193
![[img]](https://boris.unibe.ch/style/images/fileicons/text.png) |
Text
reprint.pdf - Published Version Restricted to registered users only Available under License Publisher holds Copyright. Download (2MB) |
|
|
Text
Nesselberger et al final.pdf - Accepted Version Available under License Publisher holds Copyright. Download (1MB) | Preview |
Insitu observation of anion adsorption on industrial high-surface-area catalysts is used for the first time under oxygen reduction reaction (ORR) conditions with a defined mass transport. For this purpose, a specially fabricated electrode is used for which the catalyst layer is spray-coated on top of a structured Au contact layer and applied to our recently developed insitu attenuated total reflectance FTIR wall-jet electrode. The designed interface allows us to track anion adsorption and measure the reaction rate simultaneously under mass controlled conditions. The observed absorption bands are caused by anion interaction with the active phase and also the carbon support. If we analyze the absorption band intensity of adsorbed anions as a function of the oxygen reduction reaction rate, the band intensity decreases with the onset of the ORR. This shows that ORR inhibition is a complex interplay between site blocking caused by anion adsorption and oxide formation.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP) |
UniBE Contributor: |
Arenz, Matthias |
Subjects: |
500 Science > 570 Life sciences; biology 500 Science > 540 Chemistry |
ISSN: |
1867-3880 |
Publisher: |
WILEY-VCH |
Language: |
English |
Submitter: |
Matthias Arenz |
Date Deposited: |
17 Nov 2016 16:28 |
Last Modified: |
05 Dec 2022 14:59 |
Publisher DOI: |
10.1002/cctc.201501193 |
Web of Science ID: |
000373074900017 |
Uncontrolled Keywords: |
electrochemistry fuel cells ir spectroscopy platinum supported catalysts infrared-absorption spectroscopy fuel-cell sulfate adsorption adsorbed sulfate ir spectroscopy particle-size atr-ftiras electrodes carbon acid |
BORIS DOI: |
10.7892/boris.89894 |
URI: |
https://boris.unibe.ch/id/eprint/89894 |
Actions (login required)
 |
Edit item |