Journal
SOLID STATE IONICS
Volume 181, Issue 33-34, Pages 1525-1529Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2010.08.017
Keywords
Hydrothermal synthesis; Cubic Li2TiO3; Phase stability; Synchrotron diffraction
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Funding
- Sud-Chemie AG in Moosburg, Germany
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Cubic Li2TiO3 samples (space group Fm-3m) were synthesized by hydrothermal reactions at 180 degrees C for 18 h, using titania powder and lithium hydroxide in de-ionized water. The samples were found to be unstable under atmospheric conditions as Li2CO3 could be detected by X-ray powder diffraction (XRPD) on their surface. Therefore, the stability of cubic Li2TiO3 when exposed to water was investigated. In water-flushing and bathing experiments the interaction of water with the samples could be demonstrated. The observed lithium loss was analyzed by atomic absorption spectroscopy and its influence on the structural properties of cubic Li2TiO3 was determined by conventional XRPD and multi-temperature synchrotron XRPD. (C) 2010 Elsevier B.V. All rights reserved.
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