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Updated: May 5, 2026

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
Operando double-edge high-resolution X-ray absorption spectroscopy study of BiVO4 photoanodes
Alberto Piccioni1, Jagadesh Kopula Kesavan1, Lucia Amidani2
1Department of Physics and Astronomy, Alma Mater Studiorum - Università di Bologna, Viale C. Berti Pichat 6/2, 40127 Bologna, Italy.
Abstract:
High energy resolution fluorescence detected X-ray absorption spectroscopy is a powerful method for probing the electronic structure of functional materials. The X-ray penetration depth and photon-in/photon-out nature of the method allow operando experiments to be performed, in particular in electrochemical cells. Here, operando high-resolution X-ray absorption measurements of a BiVO4 photoanode are reported, simultaneously probing the local electronic states of both cations. Small but significant variations of the spectral lineshapes induced by the applied potential were observed and an explanation in terms of the occupation of electronic states at or near the band edges is proposed.
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