Crystal and Electronic Structure of Lithiated Nanosized RutileTiO2 by Electron Diffraction and Electron Energy-loss Spectroscopy

Journal Article · Thu Jun 11 04:00:00 EDT 2009 · Applied Physics Letters, 94(23):Art. No.: 233116

DOI:https://doi.org/10.1063/1.3152783· OSTI ID:958476

Wang, Chong M; Yang, Zhenguo; Thevuthasan, Suntharampillai; Liu, Jun; Baer, Donald R; Choi, Daiwon; Wang, Donghai; Zhang, Jiguang; Saraf, Laxmikant V; Nie, Zimin

The electronic structure of the nanosized rutile TiO2 before and after mechanical lithiation were studied using TEM and EELS. EELS reveals the Li K-edge at the energy-loss position of ~ 61 eV. After lithiation, the separation of the t2g-eg crystal-field splitting on both Ti L2,3-edge and O K-edge decreases, the O K-edge shifts towards a higher energy-loss position and the separation between the pre-edge peak and main peak on the O K-edge decreases. These results suggest that the lithiation of rutile TiO2 was accompanied by the reduction of Ti ion and a charge transfer from Li to Ti.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 958476
• Report Number(s): PNNL-SA-63617; 30203; KP1504020
• Journal Information: Applied Physics Letters, 94(23):Art. No.: 233116, Journal Name: Applied Physics Letters, 94(23):Art. No.: 233116 Journal Issue: 23 Vol. 94; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
CRYSTAL STRUCTURE
DOPED MATERIALS
ELECTRON DIFFRACTION
ELECTRONIC STRUCTURE
ENERGY-LOSS SPECTROSCOPY
Environmental Molecular Sciences Laboratory
LITHIUM
NANOSTRUCTURES
RUTILE