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Smaha RW, Roudebush JH, Herb JT, et al. Tuning Sodium Ion Conductivity in the Layered Honeycomb Oxide Na(3-x)Sn(2-x)Sb(x)NaO6. Inorg Chem. 2015;54(16):7985-91doi: 10.1021/acs.inorgchem.5b01186.
Smaha, R. W., Roudebush, J. H., Herb, J. T., Seibel, E. M., Krizan, J. W., Fox, G. M., Huang, Q., Arnold, C. B., & Cava, R. J. (2015). Tuning Sodium Ion Conductivity in the Layered Honeycomb Oxide Na(3-x)Sn(2-x)Sb(x)NaO6. Inorganic chemistry, 54(16), 7985-91. https://doi.org/10.1021/acs.inorgchem.5b01186
Smaha, Rebecca W, et al. "Tuning Sodium Ion Conductivity in the Layered Honeycomb Oxide Na(3-x)Sn(2-x)Sb(x)NaO6." Inorganic chemistry vol. 54,16 (2015): 7985-91. doi: https://doi.org/10.1021/acs.inorgchem.5b01186
Smaha RW, Roudebush JH, Herb JT, Seibel EM, Krizan JW, Fox GM, Huang Q, Arnold CB, Cava RJ. Tuning Sodium Ion Conductivity in the Layered Honeycomb Oxide Na(3-x)Sn(2-x)Sb(x)NaO6. Inorg Chem. 2015 Aug 17;54(16):7985-91. doi: 10.1021/acs.inorgchem.5b01186. Epub 2015 Jul 27. PMID: 26213363.
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Inorg Chem. 2015 Aug 17;54(16):7985-91. doi: 10.1021/acs.inorgchem.5b01186. Epub 2015 Jul 27.

Tuning Sodium Ion Conductivity in the Layered Honeycomb Oxide Na(3-x)Sn(2-x)Sb(x)NaO6.

Inorganic chemistry

Rebecca W Smaha, John H Roudebush, Jake T Herb, Elizabeth M Seibel, Jason W Krizan, Gary M Fox, Qingzhen Huang, Craig B Arnold, Robert J Cava

Affiliations

  1. §NIST Center for Neutron Research, Gaithersburg, Maryland 20899-6102, United States.

PMID: 26213363 DOI: 10.1021/acs.inorgchem.5b01186

Abstract

A series of compounds with the composition Na(3-x)Sn(2-x)Sb(x)NaO6 (x = 0.0, 0.2, 0.4, 0.6, 0.7, 0.8, 0.9, and 1.0) has been prepared by solid-state reaction and characterized by powder X-ray diffraction, neutron diffraction (for x = 0.0), and impedance spectroscopy. The compounds have a layered structure derived from that of α-NaFeO2, with alternating Na3 planes and NaSn2O6 slabs with honeycomb in-plane ordering. The structure of the parent compound, Na2SnO3, has been determined as a two-layer honeycomb in monoclinic space group C2/c. Due to charge neutrality requirements, the substitution of Sb(5+) for Sn(4+) creates sodium site vacancies that facilitate high sodium ion mobility. A decrease in layer stacking disorder is also observed. The conductivity increases linearly with x and has a maximum at x = 0.8 (1.43 × 10(-3) S/cm at 500 °C with suboptimal sample densities). This material may be of interest as a solid Na ion electrolyte.

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