Title :

Hyperspectral full-field quick-EXAFS imaging at the ROCK beamline for monitoring micrometre-sized heterogeneity of functional materials under process conditions

Author(s) :

Briois, Valérie [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Centre National de la Recherche Scientifique [CNRS]
Itié, Jean-Paul [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Polian, Alain [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Institut de minéralogie, de physique des matériaux et de cosmochimie [IMPMC]
King, Andrew [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Traore, Aliou Sadia [Auteur]
Institut de Physique et Chimie des Matériaux de Strasbourg [IPCMS]
Marceau, Eric [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Ersen, Ovidiu [Auteur]
Institut de Physique et Chimie des Matériaux de Strasbourg [IPCMS]
La Fontaine, Camille [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Barthe, Laurent [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Beauvois, Anthony [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Roudenko, Olga [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Belin, Stéphanie [Auteur]
Synchrotron SOLEIL [SSOLEIL]

Journal title :

Journal of Synchrotron Radiation

Abbreviated title :

J Synchrotron Radiat

Volume number :

31

Pages :

1084-1104

Publisher :

International Union of Crystallography

Publication date :

2024-09

ISSN :

1600-5775

English keyword(s) :

quick-EXAFS
hyperspectral imaging
MCR-ALS
catalysis
electrode materials

HAL domain(s) :

Chimie/Catalyse

English abstract : [en]

Full-field transmission X-ray microscopy has been recently implemented at the hard X-ray ROCK–SOLEIL quick-EXAFS beamline, adding micrometre spatial resolution to the second time resolution characterizing the beamline. ...
Show more >Full-field transmission X-ray microscopy has been recently implemented at the hard X-ray ROCK–SOLEIL quick-EXAFS beamline, adding micrometre spatial resolution to the second time resolution characterizing the beamline. Benefiting from a beam size versatility due to the beamline focusing optics, full-field hyperspectral XANES imaging has been successfully used at the Fe K-edge for monitoring the pressure-induced spin transition of a 150 µm × 150 µm Fe(o-phen)2(NCS)2 single crystal and the charge of millimetre-sized LiFePO4 battery electrodes. Hyperspectral imaging over 2000 eV has been reported for the simultaneous monitoring of Fe and Cu speciation changes during activation of a FeCu bimetallic catalyst along a millimetre-sized catalyst bed. Strategies of data acquisition and post-data analysis using Jupyter notebooks and multivariate data analysis are presented, and the gain obtained using full-field hyperspectral quick-EXAFS imaging for studies of functional materials under process conditions in comparison with macroscopic information obtained by non-spatially resolved quick-EXAFS techniques is discussed.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

ANR Project :

Spectromètre EXAFS Rapide pour Cinétiques Chimiques
Caractérisation " operando ", multi-échelle et multi-technique, des catalyseurs bimétalliques
Programme pour l'Utilisation de la Lumière Synchrotron dans le domaine du Stockage de l'Energie

Administrative institution(s) :

Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Research team(s) :

Matériaux pour la catalyse (MATCAT)

Submission date :

2024-09-14T21:02:13Z
2024-09-17T10:16:12Z