Structural and electronic studies of metal hexacyanoferrates based cathodes for Li rechargeable batteries

Marco Giorgetti (1) , A. Mignani (1) , Giuliana Aquilanti (2) , Paolo Conti (3) , Marcus Fehse (4) , Lorenzo Stievano (4, 5)

1 UNIBO - Alma Mater Studiorum Università di Bologna = University of Bologna
2 Elettra Sincrotrone Trieste
3 UNICAM - Università degli Studi di Camerino = University of Camerino
4 ICGM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
5 RS2E - Réseau sur le stockage électrochimique de l'énergie

Operando XANES and EXAFS spectra on the newly prepared Fe hexacyanocobaltate active material for positive electrodes in lithium batteries have been recorded at the XAFS beamline of Elettra using a suitable in situ cell. In this way, it was possible to follow in detail the main structural and electronic changes during the charge and discharge processes of the battery. The use of a chemometric approach for data analysis is also underlined.

Mots clés: Prussian Blue; X-ray absorption spectroscopy; Cathode materials; Li-ion batteries

Domaines: Matériaux

Marco Giorgetti, A. Mignani, Giuliana Aquilanti, Paolo Conti, Marcus Fehse, et al.. Structural and electronic studies of metal hexacyanoferrates based cathodes for Li rechargeable batteries. Journal of Physics: Conference Series, 2016, 712, pp.012127. ⟨10.1088/1742-6596/712/1/012127⟩. ⟨hal-01350705⟩