Chemical and Structural In-Situ Characterization of Model Electrocatalysts by Combined Infrared Spectroscopy and Surface X-ray Diffraction

Brummel O, Jacobse L, Simanenko A, Deng X, Geile S, Gutowski O, Vonk V, Lykhach Y, Stierle A, Libuda J (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Journal of Physical Chemistry Letters American Chemical Society

Book Volume: 14

Pages Range: 8820-8827

Journal Issue: 39

DOI: 10.1021/acs.jpclett.3c01777

Abstract

New diagnostic approaches are needed to drive progress in the field of electrocatalysis and address the challenges of developing electrocatalytic materials with superior activity, selectivity, and stability. To this end, we developed a versatile experimental setup that combines two complementary in-situ techniques for the simultaneous chemical and structural analysis of planar electrodes under electrochemical conditions: high-energy surface X-ray diffraction (HE-SXRD) and infrared reflection absorption spectroscopy (IRRAS). We tested the potential of the experimental setup by performing a model study in which we investigated the oxidation of preadsorbed CO on a Pt(111) surface as well as the oxidation of the Pt(111) electrode itself. In a single experiment, we were able to identify the adsorbates, their potential dependent adsorption geometries, the effect of the adsorbates on the surface morphology, and the structural evolution of Pt(111) during surface electro-oxidation. In a broader perspective, the combined setup has a high application potential in the field of energy conversion and storage.

Authors with CRIS profile

Olaf Brummel Lehrstuhl für Katalytische Grenzflächenforschung Alexander Simanenko Lehrstuhl für Katalytische Grenzflächenforschung Xin Deng Lehrstuhl für Katalytische Grenzflächenforschung Yaroslava Lykhach Lehrstuhl für Katalytische Grenzflächenforschung Jörg Libuda Lehrstuhl für Katalytische Grenzflächenforschung

Involved external institutions

Deutsches Elektronen-Synchrotron DESY DE Germany (DE)

How to cite

APA:

Brummel, O., Jacobse, L., Simanenko, A., Deng, X., Geile, S., Gutowski, O.,... Libuda, J. (2023). Chemical and Structural In-Situ Characterization of Model Electrocatalysts by Combined Infrared Spectroscopy and Surface X-ray Diffraction. Journal of Physical Chemistry Letters, 14(39), 8820-8827. https://dx.doi.org/10.1021/acs.jpclett.3c01777

MLA:

Brummel, Olaf, et al. "Chemical and Structural In-Situ Characterization of Model Electrocatalysts by Combined Infrared Spectroscopy and Surface X-ray Diffraction." Journal of Physical Chemistry Letters 14.39 (2023): 8820-8827.

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