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Title: High-pressure synthesis of solid solutions between trigonal LiNiO{sub 2} and monoclinic Li[Li{sub 1/3}Ni{sub 2/3}]O{sub 2}

Abstract

High-pressure synthesis in an oxygen-rich atmosphere yields solid solutions between LiNiO{sub 2} and Li{sub 2}NiO{sub 3} over the whole concentration range. Structural characterization of the high-pressure oxides was performed using powder XRD, SEM analysis, IR spectroscopy, EPR spectroscopy at 9.23 and 115GHz and magnetic susceptibility measurements. The crystal structure of Li[Li{sub x}Ni{sub 1-x}]O{sub 2} ,0=<x=<13, changes from trigonal R-3m to monoclinic C2/m at Li-to-Ni ratio of 2 (or x=13). The incorporation of Li into NiO{sub 2}-layers causes a decrease in the mean Li-O and Ni{sub 1-x}Li{sub x}-O bond distance. Li and Ni ions in the mixed Ni{sub 1-x}Li{sub x}O{sub 2}-layers display a tendency to order at a short length scale in such a way that mimics the Li{sub 1/3}Ni{sub 2/3}-arrangement of the end Li[Li{sub 1/3}Ni{sub 2/3}]O{sub 2} composition. The charge distribution in these oxides proceeds via Ni{sup 3+} and Ni{sup 4+} ions.

Authors:
 [1];  [1];  [1];  [2]
  1. Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Bldg. 11, BG-1113 Sofia (Bulgaria)
  2. Bayerisches Geoinstitut, Universitaet Bayreuth, D-95440 Bayreuth (Germany)
Publication Date:
OSTI Identifier:
20725949
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 178; Journal Issue: 5; Other Information: DOI: 10.1016/j.jssc.2005.03.007; PII: S0022-4596(05)00101-5; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BOND LENGTHS; ELECTRON SPIN RESONANCE; INFRARED SPECTRA; LAYERS; LITHIUM COMPOUNDS; MAGNETIC SUSCEPTIBILITY; MONOCLINIC LATTICES; NICKEL IONS; NICKELATES; SCANNING ELECTRON MICROSCOPY; SOLID SOLUTIONS; SYNTHESIS; X-RAY DIFFRACTION

Citation Formats

Shinova, Elitza, Zhecheva, Ekaterina, Stoyanova, Radostina, Bromiley, Geoffrey D, and Department of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ. High-pressure synthesis of solid solutions between trigonal LiNiO{sub 2} and monoclinic Li[Li{sub 1/3}Ni{sub 2/3}]O{sub 2}. United States: N. p., 2005. Web. doi:10.1016/j.jssc.2005.03.007.
Shinova, Elitza, Zhecheva, Ekaterina, Stoyanova, Radostina, Bromiley, Geoffrey D, & Department of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ. High-pressure synthesis of solid solutions between trigonal LiNiO{sub 2} and monoclinic Li[Li{sub 1/3}Ni{sub 2/3}]O{sub 2}. United States. doi:10.1016/j.jssc.2005.03.007.
Shinova, Elitza, Zhecheva, Ekaterina, Stoyanova, Radostina, Bromiley, Geoffrey D, and Department of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ. Sun . "High-pressure synthesis of solid solutions between trigonal LiNiO{sub 2} and monoclinic Li[Li{sub 1/3}Ni{sub 2/3}]O{sub 2}". United States. doi:10.1016/j.jssc.2005.03.007.
@article{osti_20725949,
title = {High-pressure synthesis of solid solutions between trigonal LiNiO{sub 2} and monoclinic Li[Li{sub 1/3}Ni{sub 2/3}]O{sub 2}},
author = {Shinova, Elitza and Zhecheva, Ekaterina and Stoyanova, Radostina and Bromiley, Geoffrey D and Department of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ},
abstractNote = {High-pressure synthesis in an oxygen-rich atmosphere yields solid solutions between LiNiO{sub 2} and Li{sub 2}NiO{sub 3} over the whole concentration range. Structural characterization of the high-pressure oxides was performed using powder XRD, SEM analysis, IR spectroscopy, EPR spectroscopy at 9.23 and 115GHz and magnetic susceptibility measurements. The crystal structure of Li[Li{sub x}Ni{sub 1-x}]O{sub 2} ,0=<x=<13, changes from trigonal R-3m to monoclinic C2/m at Li-to-Ni ratio of 2 (or x=13). The incorporation of Li into NiO{sub 2}-layers causes a decrease in the mean Li-O and Ni{sub 1-x}Li{sub x}-O bond distance. Li and Ni ions in the mixed Ni{sub 1-x}Li{sub x}O{sub 2}-layers display a tendency to order at a short length scale in such a way that mimics the Li{sub 1/3}Ni{sub 2/3}-arrangement of the end Li[Li{sub 1/3}Ni{sub 2/3}]O{sub 2} composition. The charge distribution in these oxides proceeds via Ni{sup 3+} and Ni{sup 4+} ions.},
doi = {10.1016/j.jssc.2005.03.007},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = 5,
volume = 178,
place = {United States},
year = {2005},
month = {5}
}