Electronic structure of Li2Fe1−xMnxP2O7 for lithium-ion battery studied by resonant photoemission spectroscopy
In order to clarify changes in the electronic structures, especially Fe partial density of states (DOS), of Li2Fe1−xMnxP2O7 with Mn substitution, we have performed x-ray absorption spectroscopy and resonant photoemission spectroscopy (RPES) experiments for Li2Fe1−xMnxP2O7. Using RPES teqniques, we h...
Gespeichert in:
Veröffentlicht in: | Journal of physics. Conference series 2014-04, Vol.502 (1) |
---|---|
Hauptverfasser: | , , , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | In order to clarify changes in the electronic structures, especially Fe partial density of states (DOS), of Li2Fe1−xMnxP2O7 with Mn substitution, we have performed x-ray absorption spectroscopy and resonant photoemission spectroscopy (RPES) experiments for Li2Fe1−xMnxP2O7. Using RPES teqniques, we have succeeded in extracting the Fe2+ partial DOS. We have found the systematic shift to higher binding energy and broadening of Fe 3d t2g down-spin states accompanying with the Mn substitution. The peak shift of the Fe 3d t2g down-spin states is matched very well to the change of Fe3+/Fe2+ redox potential, suggesting that the origin of high Fe3+/Fe2+ redox potential in Li2Fe1−xMnxP2O7 is the shift of the Fe 3d t2g down-spin states to the higher binding energy with Mn substitution. |
---|---|
ISSN: | 1742-6588 1742-6596 |
DOI: | 10.1088/1742-6596/502/1/012004 |