Low-temperature synthesis, characterization, and stability of spinel-type Li2NiF4 and solid-solutions Li2Ni 1-xCoxF4

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Julia Kohl
  • Suliman Nakhal
  • Noel Ferro
  • Patrick Bottke
  • Martin Wilkening
  • Thomas Bredow
  • Paul Heitjans
  • Martin Lerch

External Research Organisations

  • Technische Universität Berlin
  • University of Bonn
  • Graz University of Technology
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Details

Original languageEnglish
Pages (from-to)326-333
Number of pages8
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Volume639
Issue number2
Publication statusPublished - Feb 2013

Abstract

A new synthesis route to Li2NiF4 based on a fluorolytic process using Ni(acac)2 or Ni(OAc)2· 4H2O as precursor is presented. Variation of the synthesis conditions allows crystallite size control of the obtained powders. 6Li and 7Li MAS NMR experiments were carried out to study local environments of the lithium ions. Several attempts were made to synthesize Li 2CoF4, which are, unfortunately, hitherto not successful. Nevertheless, our studies clearly reveal that solid solutions Li 2NiF4-Li2CoF4 are stable up to ca. 30 % cobalt. High-temperature X-ray diffraction measurements also show no evidence for the existence of pure Li2CoF4. These findings are supported by quantum chemical calculations.

Keywords

    Cobalt, Nickel, NMR spectroscopy, Synthesis, X-ray diffraction

ASJC Scopus subject areas

Cite this

Low-temperature synthesis, characterization, and stability of spinel-type Li2NiF4 and solid-solutions Li2Ni 1-xCoxF4. / Kohl, Julia; Nakhal, Suliman; Ferro, Noel et al.
In: Zeitschrift fur Anorganische und Allgemeine Chemie, Vol. 639, No. 2, 02.2013, p. 326-333.

Research output: Contribution to journalArticleResearchpeer review

Kohl J, Nakhal S, Ferro N, Bottke P, Wilkening M, Bredow T et al. Low-temperature synthesis, characterization, and stability of spinel-type Li2NiF4 and solid-solutions Li2Ni 1-xCoxF4. Zeitschrift fur Anorganische und Allgemeine Chemie. 2013 Feb;639(2):326-333. doi: 10.1002/zaac.201200455
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AU - Kohl, Julia

AU - Nakhal, Suliman

AU - Ferro, Noel

AU - Bottke, Patrick

AU - Wilkening, Martin

AU - Bredow, Thomas

AU - Heitjans, Paul

AU - Lerch, Martin

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KW - Nickel

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