Neutron diffraction studies of the Na-ion battery electrode materials NaCoCr2(PO4)3, NaNiCr2(PO4)3, and Na2Ni2Cr(PO4)3

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dc.contributor.authorBen Yahia, Hen_AU
dc.contributor.authorEssehli, Ren_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorPark, JBen_AU
dc.contributor.authorSun, YKen_AU
dc.contributor.authorAl-Maadeed, MAen_AU
dc.contributor.authorBelharouak, Ien_AU
dc.date.accessioned2021-02-04T00:00:45Zen_AU
dc.date.available2021-02-04T00:00:45Zen_AU
dc.date.issued2016-06-01en_AU
dc.date.statistics2021-01-19en_AU
dc.description.abstractThe new compounds NaCoCr2(PO4)3, NaNiCr2(PO4)3, and Na2Ni2Cr(PO4)3 were synthesized by sol-gel method and their crystal structures were determined by using neutron powder diffraction data. These compounds were characterized by galvanometric cycling and cyclic voltammetry. NaCoCr2(PO4)3, NaNiCr2(PO4)3, and Na2Ni2Cr(PO4)3 crystallize with a stuffed α-CrPO4-type structure. The structure consists of a 3D-framework made of octahedra and tetrahedra that are sharing corners and/or edges generating channels along [100] and [010], in which the sodium atoms are located. Of significance, in the structures of NaNiCr2(PO4)3, and Na2Ni2Cr(PO4)3 a statistical disorder Ni2+/Cr3+ was observed on both the 8g and 4a atomic positions, whereas in NaCoCr2(PO4)3 the statistical disorder Co2+/Cr3+ was only observed on the 8g atomic position. When tested as negative electrode materials, NaCoCr2(PO4)3, NaNiCr2(PO4)3, and Na2Ni2Cr(PO4)3 delivered specific capacities of 352, 385, and 368 mA h g−1, respectively, which attests to the electrochemical activity of sodium in these compounds. © 2016 Elsevier Inc.en_AU
dc.identifier.citationBen Yahia, H., Essehli, R., Avdeev, M., Park, J-B., Sun, Y-K., Al-Maadeed, M. A., Belharouak, I. (2016). Neutron diffraction studies of the Na-ion battery electrode materials NaCoCr2(PO4)3, NaNiCr2(PO4)3, and Na2Ni2Cr(PO4)3. Journal of Solid State Chemistry, 238, 103-108, doi:10.1016/j.jssc.2016.03.011en_AU
dc.identifier.issn0022-4596en_AU
dc.identifier.journaltitleJournal of Solid State Chemistryen_AU
dc.identifier.pagination103-108en_AU
dc.identifier.urihttps://doi.org/10.1016/j.jssc.2016.03.011en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10304en_AU
dc.identifier.volume238en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectCrystal structureen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectSynthesisen_AU
dc.subjectElectric batteriesen_AU
dc.subjectAnodesen_AU
dc.subjectSodium ionsen_AU
dc.subjectElectrodesen_AU
dc.subjectSol-gel processen_AU
dc.titleNeutron diffraction studies of the Na-ion battery electrode materials NaCoCr2(PO4)3, NaNiCr2(PO4)3, and Na2Ni2Cr(PO4)3en_AU
dc.typeJournal Articleen_AU
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