Operando X-ray absorption spectroscopy applied to battery materials at ICGM
The challenging case of BiSb's sodiation
Ali Darwiche (Université de Montpellier)
Fabrizio Murgia (Université de Montpellier)
M. Fehse (CNRS FR3459, TU Delft - RST/Storage of Electrochemical Energy, European Synchrotron Radiation Facility)
Abdelfattah Mahmoud (Université de Liège)
Antonella Iadecola (CNRS FR3459)
Stéphanie Belin (DiffAbs Beamline Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin)
Camille La Fontaine (L'Orme les Merisiers Saint-Aubin)
Valérie Briois (L'Orme les Merisiers Saint-Aubin)
R. P. Hermann (Oak Ridge National Laboratory)
G.B. More Authors (External organisation)
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Abstract
X-ray absorption spectroscopy (XAS) is a synchrotron-based, element-specific, short-range structural method largely used in the study of materials, already widely employed for the study of the electrochemical processes in battery systems. The high penetration of the X-rays makes XAS particularly suited for the study of battery materials under operando conditions using specifically developed in situ electrochemical cells. In this paper, the application of XAS to the study of battery materials carried out at Institut Charles Gerhardt Montpellier (France) will be outlined, illustrating the type of information provided by XAS. The challenging study of the sodiation of Bi0.50Sb0.50 followed individually and simultaneously at both metals will be also presented in order to highlight the typical advantages of this technique even when it is pushed at its technical limits.
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