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Fe 2p spectra associated with extraction/infusion of Li ions at LiFePO 4 thin film cathode surface
Author(s) -
Shigeno M.,
Kurita T.,
Watanabe S.,
Kataoka Y.
Publication year - 2016
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.6033
Subject(s) - lithium iron phosphate , cathode , ion , thin film , valence (chemistry) , spectral line , analytical chemistry (journal) , ionic bonding , oxidation state , lithium (medication) , chemistry , materials science , inorganic chemistry , nanotechnology , electrode , electrochemistry , metal , medicine , physics , organic chemistry , chromatography , astronomy , endocrinology
A variation of iron ionic states in Fe 2p spectra for charged and discharged lithium iron phosphate (LiFePO 4 ) thin film as a cathode corresponds to cathode behavior. The shape of valence band spectra was investigated, and a peak appeared at about 1.6 eV for discharged LiFePO 4 thin film. This peak was attributed to the Fe 2+ state without oxidation state using oxidized LiFePO 4 thin films. The variation of iron ionic states from Fe 2p spectra was confirmed using this peak. Copyright © 2016 John Wiley & Sons, Ltd.