Operando XAFS and XRD Study of a Prussian Blue Analogue Cathode Material: Iron Hexacyanocobaltate

Abstract : The reversible electrochemical lithiation of potassium iron hexacyanocobaltate (FeCo) was studied by operando X-ray diffraction (XRD) and X-ray absorption fine structure (XAFS) assisted by chemometric techniques. In this way, it was possible to follow the system dynamics and retrieve structural and electronic transformations along cycling at both Fe and Co sites. These analyses confirmed that FeCo features iron as the main electroactive site. Even though the release of potassium ions causes a local disorder around the iron site, the material exhibits an excellent structural stability during the alkali ion deinsertion/insertion processes. An independent but interrelated analysis approach offers a good strategy for data treatment and provides a time-resolved picture of the studied system.
Complete list of metadatas

Cited literature [59 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01905795
Contributor : Lorenzo Stievano <>
Submitted on : Friday, October 26, 2018 - 10:50:27 AM
Last modification on : Tuesday, May 28, 2019 - 2:06:14 PM

File

Condens Matter 3 (2018) 36.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

Angelo Mullaliu, Paolo Conti, Giuliana Aquilanti, Jasper Plaisier, Lorenzo Stievano, et al.. Operando XAFS and XRD Study of a Prussian Blue Analogue Cathode Material: Iron Hexacyanocobaltate. Condensed Matter, MDPI, 2018, 3 (4), pp.36. ⟨10.3390/condmat3040036⟩. ⟨hal-01905795⟩

Share

Metrics

Record views

26

Files downloads

19