Journal Article

PUBDB-2023-06138

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Chemical and Structural In-Situ Characterization of Model Electrocatalysts by Combined Infrared Spectroscopy and Surface X-ray Diffraction

Brummel, O. (Corresponding author)Extern* ; Jacobse, L.Extern*DESY* ; Simanenko, A.Extern* ; Deng, X.Extern*DESY* ; Geile, S.DESY* ; Gutowski, O.DESY* ; Vonk, V.DESY* ; Lykhach, Y.Extern* ; Stierle, A.DESY* ; Libuda, J.Extern*

2023
ACS Washington, DC

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Please use a persistent id in citations: doi:10.1021/acs.jpclett.3c01777  doi:10.3204/PUBDB-2023-06138

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.

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Contributing Institute(s):

1. Nanolab (FS-NL)
2. DOOR-User (DOOR ; HAS-User)
3. Experimentebetreuung PETRA III (FS-PET-D)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. FS-Proposal: I-20211206 (I-20211206) (I-20211206)
4. CALIPSOplus - Convenient Access to Light Sources Open to Innovation, Science and to the World (730872) (730872)
5. DFG project G:(GEPRIS)496207555 - FOR 5499: Molekulares Management von Sonnenenergie - Chemie von MOST-Systemen (496207555) (496207555)
6. DFG project G:(GEPRIS)322419553 - Elektrokatalysatoren mit Ionischen Flüssigkeiten: Von der Surface Science zur Spektroelektrochemie (322419553) (322419553)
7. DFG project G:(GEPRIS)431733372 - Komplexe Modellkatalysatoren für die selektive Umwandlung erneuerbarer Brennstoffe (431733372) (431733372)
8. DFG project G:(GEPRIS)453560721 - EMOCAT – Elektrifizierte Modellkatalyse: Ein wissensbasierter Zugang zu neuen oxid-stabilisierten Elektrokatalysatoren (453560721) (453560721)

Experiment(s):

1. PETRA Beamline P07 (PETRA III)
2. DESY NanoLab: X-Ray Diffraction

Appears in the scientific report 2023

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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