Electronic structure of electrochemically Li-inserted TiO2 studied with synchrotron radiation electron spectroscopies

The electronic properties were studied of TiO2 and electrochem. Li-inserted TiO2 using synchrotron radiation photoelectron spectroscopy and x-ray absorption spectroscopy (XAS) in conjunction with resonant photoelectron spectroscopy. Core level (Ti 2p) and valence level spectra show the presence of Ti3+ states in LixTiO2. The x values detd. from core level peak intensities were found to be directly correlated to the inserted amt. of Li+ detd. electrochem. The x-dependent width of the Ti 2p peaks is consistent with a two-phase regime at intermediate x values. Resonant photoelectron spectroscopy at the Ti 2p edge was performed for TiO2 and Li0.5TiO2 to delineate the Ti4+ and Ti3+ contributions to the XAS spectrum.


Published in:
Journal of Chemical Physics, 118, 5607-5612
Year:
2003
ISSN:
0021-9606
Keywords:
Laboratories:




 Record created 2015-07-06, last modified 2018-09-13


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)