Lithium ion insertion in nanoporous anatase TiO2 studied with RIXS

Journal Article · Fri Apr 15 04:00:00 EDT 2005 · Journal of Chemical Physics

OSTI ID:842889

Augustsson, A ^[1]; Henningsson, A; Butorin, S M; Siegbahn, H; Nordgren, J; Guo, J -H

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1. LBNL Library

Lithium insertion into nanoporous anatase TiO{sub 2} electrodes has been studied using resonant inelastic soft-x-ray scattering spectroscopy (RIXS). We have measured Ti 2p absorption, L{sub 2,3}-emission and resonant inelastic scattering spectra of pristine anatase TiO{sub 2} and Li inserted TiO{sub 2}. Inelastic scattering features in RIXS spectra of pristine TiO{sub 2} are assigned to charge-transfer excitations. Low energy-loss features for Li inserted TiO{sub 2} electrodes, appearing with in t{sub 2g} bands, due to d-d excitations, indicate the presence of Ti{sup 3+} states. The experimental observations suggest strong electron correlation in anatase TiO{sub 2} introduced by the Li-insertion.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director. Office of Science. Office of Basic Energy Sciences; Swedish Science Research Council, Goran Gustafsson Foundation for Research in National Science and Medicine
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 842889
• Report Number(s): LBNL--53956
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 7 Vol. 119; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
36 MATERIALS SCIENCE
ABSORPTION
ELECTRODES
ELECTRON CORRELATION
INELASTIC SCATTERING
LITHIUM
LITHIUM IONS
SCATTERING
SPECTRA
SPECTROSCOPY
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