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.
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Michel Armand (CIC energiGUNE), Teófilo Rojo (CIC energiGUNE), Gurpreet Singh (CIC energiGUNE), Laida Otaegui (CIC energiGUNE), Frederic Aguesse (CIC energiGUNE) and Lucienne Buannic (CIC energiGUNE)