Lithium ion insertion in nanoporous anatase TiO2 studied with RIXS

被引：41

作者：

Augustsson, A

Henningsson, A

Butorin, SM

Siegbahn, H

Nordgren, J

Guo, JH

机构：

[1] Uppsala Univ, Dept Phys, S-75121 Uppsala, Sweden

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 2003年 / 119卷 / 07期

关键词：

D O I：

10.1063/1.1591735

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Lithium insertion into nanoporous anatase TiO2 electrodes has been studied using resonant inelastic soft-x-ray scattering spectroscopy (RIXS). We have measured Ti 2p absorption, L-2,L-3-emission and resonant inelastic scattering spectra of pristine anatase TiO2 and Li inserted TiO2. Inelastic scattering features in RIXS spectra of pristine TiO2 are assigned to charge-transfer excitations. Low energy-loss features for Li inserted TiO2 electrodes, appearing within t(2g) bands, due to d-d excitations, indicate the presence of Ti3+ states. The experimental observations suggest strong electron correlation in anatase TiO2 introduced by the Li-insertion. (C) 2003 American Institute of Physics.

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页码：3983 / 3987

页数：5

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