Advertisement

Synthesis and Characterization of New Intercalated Lithium Cathodes

  • R. Brec
  • J. Rouxel
Conference paper

Abstract

Layered MPXn (n = 3 and 4) have a structure closely related to the CdI2 and CdCl2 types. In their Van der Waal’s gap, they present octahedral sites. These sites are larger in the sulfide derivatives than in the corresponding disulfides of transition elements. In the octahedral interstices, lithium intercalates (M being a transition metal) without parameter expansion. Such property can be used in a battery MPXn /electrolyte/Li, in which topochemical intercalation takes place electro-chemically. The synthesis and physical properties of the two dimensionnal phases have been completed, along with chemical and electrochemical lithium intercalation. A study on NiPS3 showed this material to be stoechiometric. Only the MPX- group exhibited promising behaviour, and particularly NiPS3, FePSe3 and FePS3. Open potential circuit and magnetic measurements, NMR of 7Li and 31P indicate that, in the case of Lix NiPS3 (O < x < 1.5), the intercalation takes place through two phases (Li0.5 Nips3 and Li1.5Nips3). High current density discharge curves carried out on the three above compounds have revealed some solvent interaction during intercalation. Such interaction improves the reversibility of the generator, at least in the case of NiPS3.

Keywords

Octahedral Site Propylene Carbonate Lithium Intercalation Powder Spectrum Sulfur Layer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. (1).
    W. Klingen, Dissertation, Universität Hohenheim, Germany 1969.Google Scholar
  2. (2).
    W. Klingen, G. Eulenberger and H. Hahn, Naturwissenschaften, 55, 229 (1968).CrossRefGoogle Scholar
  3. (3).
    W. Klingen, G. Eulenberger and H. Hahn, Naturwissenschaften, 57, 88 (1970).CrossRefGoogle Scholar
  4. (4).
    B.E. Taylor, J. Steger and A. Wold, J. Solid State Chem., 7, 461 (1973)CrossRefGoogle Scholar
  5. (5).
    B.E. Taylor, J. Steger, A. Wold and E. Kostiner, Inorg. Chem., 13, 2719 (1974).CrossRefGoogle Scholar
  6. (6).
    A. LE Mehaute, G. Ouvrard, R. Brec and J. Rouxel, Mater. Res. Bull., 12, 1191 (1977)CrossRefGoogle Scholar
  7. (7).
    Y. Chabre, P. Segransan, C. Berthier and G. Ouvrard, Proceedings of Conference on Fast Ion Transport in Solids—Lake Geneva—1979.Google Scholar

Copyright information

© ECSC, EEC, EAEC, Brussels and Luxemburg 1980

Authors and Affiliations

  • R. Brec
    • 1
  • J. Rouxel
    • 1
  1. 1.Laboratoire de Chimie du SolideUER de ChimieNantesFrance

Personalised recommendations