Crystal structure and ionic conductivity of the new cobalt polyphosphate NaCo(PO3)3

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dc.contributor.authorBen Smida, Yen_AU
dc.contributor.authorGuesmi, Aen_AU
dc.contributor.authorGeorges, Sen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorZid, MFen_AU
dc.date.accessioned2021-02-03T23:06:51Zen_AU
dc.date.available2021-02-03T23:06:51Zen_AU
dc.date.issued2016-02-01en_AU
dc.date.statistics2-01-19en_AU
dc.description.abstractPolycrystalline sample of sodium cobalt triphosphate NaCo(PO3)3 was obtained by solid-state reaction and characterized by X-ray powder diffraction. The title compound is isostructural to NaZn(PO3)3 and its structure was refined by the Rietveld refinement in the cubic system, space group Pa̅, with a=14.2484(4) Å. The obtained structural model is supported by bond valence sum (BVS) and charge distribution (CD) methods. The structure is described as a three-dimensional open-anionic framework built up of corner-sharing CoO6 and PO4 polyhedra with interconnecting channels along the 3-axis, in which the Na+ cations are located. The ionic conductivity measurements are performed on pellets with relative density of 84%. The electrical conductivity is 1.01×10−5 S cm−1 at 480 °C and the activation energy deduced from the slope is 1.1 eV. The correlation between crystal structure and ionic conductivity was studied by the means of the bond-valence-site-energy (BVSE) model. The main result is that sodium transport is made mainly via Na2 and Na3 sites. © 2015 Elsevier Inc.en_AU
dc.identifier.citationBen Smida, Y., Guesmi, A., Georges, S., Avdeev, M., & Zid, M. F. (2016). Crystal structure and ionic conductivity of the new cobalt polyphosphate NaCo(PO3)3. Journal of Solid State Chemistry, 234, 15-21. doi:10.1016/j.jssc.2015.11.029en_AU
dc.identifier.issn0022-4596en_AU
dc.identifier.journaltitleJournal of Solid State Chemistryen_AU
dc.identifier.pagination15-21en_AU
dc.identifier.urihttps://doi.org/10.1016/j.jssc.2015.11.029en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10298en_AU
dc.identifier.volume234en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectX-ray diffractionen_AU
dc.subjectIonic conductivityen_AU
dc.subjectCrystal structureen_AU
dc.subjectValenceen_AU
dc.subjectPolycrystalsen_AU
dc.subjectPhosphatesen_AU
dc.titleCrystal structure and ionic conductivity of the new cobalt polyphosphate NaCo(PO3)3en_AU
dc.typeJournal Articleen_AU
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