Fe 2p spectra associated with extraction/infusion of Li ions at LiFePO sub(4) thin film cathode surface

Fe 2p spectra associated with extraction/infusion of Li ions at LiFePO sub(4) thin film cathode surface

A variation of iron ionic states in Fe 2p spectra for charged and discharged lithium iron phosphate (LiFePO sub(4)) thin film as a cathode corresponds to cathode behavior. The shape of valence band spectra was investigated, and a peak appeared at about 1.6eV for discharged LiFePO sub(4) thin film. T...

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Veröffentlicht in:Surface and interface analysis 2016-07, Vol.48 (7), p.640-643
Hauptverfasser: Shigeno, M, Kurita, T, Watanabe, S, Kataoka, Y
Format: Artikel
Sprache:eng
Schlagworte:
Cathodes
Discharge
Infusion
Interface analysis
Iron
Lithium
Spectra
Thin films
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Zusammenfassung:A variation of iron ionic states in Fe 2p spectra for charged and discharged lithium iron phosphate (LiFePO sub(4)) thin film as a cathode corresponds to cathode behavior. The shape of valence band spectra was investigated, and a peak appeared at about 1.6eV for discharged LiFePO sub(4) thin film. This peak was attributed to the Fe super(2+) state without oxidation state using oxidized LiFePO sub(4) thin films. The variation of iron ionic states from Fe 2p spectra was confirmed using this peak.
ISSN:0142-2421
1096-9918
DOI:10.1002/sia.6033