Loading...
research article
Lithium intercalation in nanoporous anatase TiO2 studied with XPS
Intercalation of lithium ions in nanoporous anatase TiO2 was studied with XPS using a novel electrochem. prepn. technique. The electrolyte was 0.5 M LiClO4 in acetonitrile (not water-free). The electrochem. insertion of lithium ions creates reduced Ti ions (Ti3+), which was obsd. as a new well-resolved state in the Ti 2p core level spectrum shifted 2.1 eV to lower binding energy. The new Ti 2p state was reversible when the electrode was deintercalated. Changes in the O 1s core spectra were also obsd. and discussed in terms of hydrated lithium ions in the Helmholtz layer, or formation of Li2O/LiOH.
Type
research article
Authors
Soedergren, Sven
•
Siegbahn, Hans
•
Rensmo, Haakan
•
Lindstroem, Henrik
•
•
Lindquist, Sten-Eric
Publication date
1997
Published in
Volume
101
Start page
3087
End page
3090
Subjects
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
July 6, 2015
Use this identifier to reference this record