Arapova, Irina Yu.

Baklanova, Yana V.

Bardet, Michel

Buzlukov, Anton L.

Denisova, Tatiana A.

Hadermann, Joke

Khaikina, Elena G.

Lazoryak, Bogdan I.

Medvedeva, Nadezhda I.

Morozov, Vladimir A.

Savina, Aleksandra A.

Stefanovich, Sergey Yu.

Abstract: Solid electrolytes are important materials with a wide range of technological applications. This work reports the crystal structure and electrical properties of a new solid electrolyte Na9Al(MoO4)(6). The monoclinic Na9Al(MoO4)(6) consists of isolated polyhedral, [Al(MoO4)(6)](9-) clusters composed of a central AlO6 octahedron sharing vertices with six MoO4 tetrahedra to form a three-dimensional framework. The AlO6 octahedron also shares edges with one NalO(6) octahedron and two Na2O(6) octahedra. Na3-Na5 atoms are located in the framework cavities. The structure is related to that of sodium ion conductor II-Na3Fe2(AsO4)(3). High-temperature conductivity measurements revealed that the conductivity (sigma) of Na9Al(MoO4)(6) at 803 K equals 1.63 X 10(-2) S cm(-1). The temperature behavior of the Na-23 and Al-27 nuclear magnetic resonance spectra and the spin-lattice relaxation rates of the Na-23 nuclei indicate the presence of fast Na+ ion diffusion in the studied compound. At T<490 K, diffusion occurs by means of Na+ ion jumps exclusively through the sublattice of Na3-Na5 positions, whereas Na1 and Na2 become involved in the diffusion processes (through chemical exchange with the Na3-Na5 sublattice) only at higher temperatures

Institutional Repository Universiteit Antwerpen

New solid electrolyte <tex>Na_{9}Al(MoO_{4})_{6}$</tex> : structure and <tex>Na^{+}$</tex> ion conductivity

New solid electrolyte <tex>Na_{9}Al(MoO_{4})_{6} $</tex> : structure and <tex>Na^{+}$ </tex> ion conductivity

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Institutional Repository Universiteit Antwerpen

New solid electrolyte <tex>Na_{9}Al(MoO_{4})_{6}</tex>:structureand<tex>Na+</tex> : structure and <tex>Na^{+}</tex>:structureand<tex>Na+</tex> ion conductivity

Abstract

Similar works

Full text

Available Versions

Institutional Repository Universiteit Antwerpen

New solid electrolyte <tex>Na_{9}Al(MoO_{4})_{6} $</tex> : structure and <tex>Na^{+}$ </tex> ion conductivity