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Title: Sealed-tube synthesis and phase diagram of Li{sub x}TiS{sub 2} (0 ≤ x ≤1)

Graphical abstract: We reported a new method to prepare Li{sub x}TiS{sub 2} (0 ≤ x ≤ 1) at 600 °C in sealed tube using Li{sub 2}S aslithium source. A schematic phase diagram of the Li{sub x}TiS{sub 2} system has been constructed based on the DTA and XRD data. - Abstract: We reported a new method to prepare Li{sub x}TiS{sub 2} (0 ≤ x ≤ 1) at 600 °C in sealed tube using Li{sub 2}S as lithium source. The Li{sub x}TiS{sub 2} samples were characterized by powder X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, and differential thermal analysis. The variations of the lattice parameters with lithium content x in Li{sub x}TiS{sub 2} were determined by X-ray powder diffraction analysis for both 1T and 3R phases. The phase transition between low-temperature 1T phase and high-temperature 3R phase was confirmed by the powder X-ray diffraction analysis. Based on the differential thermal analysis and X-ray diffraction results, a schematic phase diagram of the Li{sub x}TiS{sub 2} system has been constructed, providing a guideline to synthesize Li{sub x}TiS{sub 2} in 1T structure or 3R structure.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [3] ;  [1] ;  [2] ;  [3]
  1. School of Material Science and Engineering, Henan University of Technology, Zhengzhou 450007 (China)
  2. (China)
  3. National Laboratory for Superconductivity, Institute of Physics, Chinese Academy of Science, Beijing 100190 (China)
Publication Date:
OSTI Identifier:
22420785
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 61; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CONCENTRATION RATIO; CRYSTAL STRUCTURE; DIFFERENTIAL THERMAL ANALYSIS; LATTICE PARAMETERS; LITHIUM SULFIDES; PHASE DIAGRAMS; PHASE TRANSFORMATIONS; POWDERS; SCANNING ELECTRON MICROSCOPY; SYNTHESIS; TEMPERATURE DEPENDENCE; THERMAL GRAVIMETRIC ANALYSIS; TITANIUM SULFIDES; X-RAY DIFFRACTION; X-RAY SPECTROSCOPY