Operando X-ray absorption spectroscopy applied to battery materials at ICGM: The challenging case of BiSb's sodiation

Ali Darwiche (1) , Fabrizio Murgia (1) , Marcus Fehse (2, 3, 1) , Abdelfattah Mahmoud (4) , Antonella Iadecola (5, 6) , Stéphanie Belin (5) , Camille La Fontaine (5) , Valérie Briois (5) , Raphael P Hermann (7) , Bernard Fraisse (1) , Romain Berthelot (1, 6) , Moulay Tahar Sougrati (1, 6, 3) , Laure Monconduit (1, 6, 3) , Lorenzo Stievano (1, 6, 3)

1 ICGM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
2 ESRF - European Synchrotron Radiation Facility [Grenoble]
3 ALISTORE-ERI - Advanced Lithium Energy Storage Systems - ALISTORE-ERI
4 GREENMAT - Group of Research in Energy and ENvironment from MATerials
5 SSOLEIL - Synchrotron SOLEIL
6 RS2E - Réseau sur le stockage électrochimique de l'énergie
7 ORNL - Oak Ridge National Laboratory [Oak Ridge]

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 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.

Domaines: Matériaux

Ali Darwiche, Fabrizio Murgia, Marcus Fehse, Abdelfattah Mahmoud, Antonella Iadecola, et al.. Operando X-ray absorption spectroscopy applied to battery materials at ICGM: The challenging case of BiSb's sodiation. Energy Storage Materials, 2019, 21, pp.1-13. ⟨10.1016/j.ensm.2019.06.027⟩. ⟨hal-02275372⟩