NEW HIGH CAPACITY MATERIALS BASED ON TRANSITION METALS OF OXINITRIDES

Inventors

Michel Armand (CIC energiGUNE), Montserrat Casas-Cabanas (CIC energiGUNE), Montserrat Galceran (CIC energiGUNE), Begoña Acebedo (CIC energiGUNE), Josh Kurzman (CNRS) and Nadir Recham (CNRS)

Abstract

Researchers at CIC energiGUNE and Centre National de la Recherche Scientifique (CNRS) have found a new family of polyanionic compounds in which a fraction of the oxygen is replaced by nitrogen, giving rise to anionic entities such as SO3N-3, PO3N-4, PO2N2-5, SiO3N-5, and SiO2N2-6. When associated with a transition metal such as Fe+2 or Mn+2, lithium intercalation materials with higher energy density can be obtained.

Added value

  • High capacity.
  • Higher conductivity than N-free compounds.

Application of the technology

  • High energy density storage applications (e.g. transportation).

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