{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T09:30:48Z","timestamp":1792056648665,"version":"4.4.0"},"reference-count":46,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2022,5,18]],"date-time":"2022-05-18T00:00:00Z","timestamp":1652832000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>With the view of developing new materials for sodium and sodium-ion power sources, NaFeO2-SnO2 (0\u201350 mol.% SnO2) powders were synthesized using a solid state method, and their phase composition and crystal structure were studied. A phase of the Na0.8Fe0.8Sn0.2O2 composition with a layered rhombohedral structure of the \u03b1-NaFeO2 type was found when the tin dioxide content was 20 mol.%. The phase produced was of an O3 structural type. O3-type phases have sufficiently good performance when used as cathode materials in sodium-ion batteries and, moreover, often have a rather high sodium-cation conductivity. A two-dimensional migration map was built using Voronoi\u2013Dirichlet partition and TOPOS software package. The sodium-ion conductivity of Na0.8Fe0.8Sn0.2O2 at room temperature was rated low (10\u22128 S \u00d7 cm\u22121 at 20 \u00b0C), which may be the result of channels too narrow for Na+ migration. The results obtained show that the application of the compound studied in this work as a solid electrolyte in sodium power sources is unlikely. It is the potential use of Na0.8Fe0.8Sn0.2O2 as the active material of cathodes in Na and Na-ion power sources that presents practical interest.<\/jats:p>","DOI":"10.3390\/ma15103612","type":"journal-article","created":{"date-parts":[[2022,5,18]],"date-time":"2022-05-18T11:59:37Z","timestamp":1652875177000},"page":"3612","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Phase Relations in a NaFeO2-SnO2 (0\u201350 mol.% SnO2) System and the Crystal Structure and Conductivity of Na0.8Fe0.8Sn0.2O2"],"prefix":"10.3390","volume":"15","author":[{"given":"Georgiy S.","family":"Shekhtman","sequence":"first","affiliation":[{"name":"Institute of High Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, 20 Akademicheskaya St., 620990 Ekaterinburg, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elena A.","family":"Sherstobitova","sequence":"additional","affiliation":[{"name":"Institute of High Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, 20 Akademicheskaya St., 620990 Ekaterinburg, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariya S.","family":"Shchelkanova","sequence":"additional","affiliation":[{"name":"Institute of High Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, 20 Akademicheskaya St., 620990 Ekaterinburg, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1759-5234","authenticated-orcid":false,"given":"Evgenia A.","family":"Ilyina","sequence":"additional","affiliation":[{"name":"Institute of High Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, 20 Akademicheskaya St., 620990 Ekaterinburg, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"9","DOI":"10.1016\/0921-5107(90)90109-O","article-title":"Technological Applications of Solid State Ionics","volume":"6","author":"Julien","year":"1990","journal-title":"Mater. Sci. Eng."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"748","DOI":"10.1016\/j.corsci.2015.06.014","article-title":"Enhanced corrosion resistance of Hypo-eutectic Al-1Mg-xSi alloys against molten sodium attack in high temperature sodium-sulfur batteries","volume":"98","author":"Jung","year":"2015","journal-title":"Corros. Sci."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"555","DOI":"10.1016\/0378-7753(90)85025-8","article-title":"Sodium-sulfur battery flight experiment definition study","volume":"29","author":"Chang","year":"1990","journal-title":"J. Power Sources"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"2821","DOI":"10.1007\/s10853-011-5302-5","article-title":"A wide-ranging review on Nasicon type materials","volume":"46","author":"Anantharamulu","year":"2011","journal-title":"J. Mater. Sci."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"281","DOI":"10.1016\/0167-2738(85)90072-4","article-title":"Potentiometric sensor for sulfur oxides using NASICON as a solid electrolyte","volume":"17","author":"Maruyama","year":"1985","journal-title":"Solid State Ion."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"752","DOI":"10.1016\/j.ssi.2008.01.095","article-title":"Energy storage beyond the horizon: Rechargeable lithium batteries","volume":"179","author":"Bruce","year":"2008","journal-title":"Solid State Ion."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"2419","DOI":"10.1016\/j.jpowsour.2009.11.048","article-title":"Lithium batteries: Status, properties and future","volume":"195","author":"Scrosati","year":"2010","journal-title":"J. Power Sources"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/S0167-2738(97)00429-3","article-title":"Review of crystalline lithium-ion conductors suitable for high temperature battery applications","volume":"104","author":"Robertson","year":"1997","journal-title":"Solid State Ion."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1007\/s11581-006-0013-7","article-title":"Recent progress in solid oxide and lithium ion conducting electrolytes research","volume":"12","author":"Thangadurai","year":"2006","journal-title":"Ionics"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"911","DOI":"10.1016\/j.ssi.2009.03.022","article-title":"Inorganic solid Li-ion conductors: An overview","volume":"180","author":"Knauth","year":"2009","journal-title":"Solid State Ion."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"140","DOI":"10.1021\/acs.chemrev.5b00563","article-title":"Inorganic Solid-State Electrolytes for Lithium Batteries: Mechanisms and Properties Governing Ion Conduction","volume":"116","author":"Bachman","year":"2016","journal-title":"Chem. Rev."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"3529","DOI":"10.1039\/C6CS00776G","article-title":"Sun Sodium-ion batteries: Present and future","volume":"46","author":"Hwang","year":"2017","journal-title":"Chem. Soc. Rew."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"102","DOI":"10.1002\/anie.201703772","article-title":"From Lithium-Ion to Sodium-Ion Batteries: Advantages, Challenges and Surprises","volume":"57","author":"Nayak","year":"2018","journal-title":"Angew. Chem. Int. Ed."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"1703137","DOI":"10.1002\/aenm.201703137","article-title":"Sodium and Sodium-Ion Batteries: 50 Years of Research","volume":"8","author":"Delmas","year":"2018","journal-title":"Adv. Energy. Mater."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"102","DOI":"10.1016\/j.ssi.2012.09.019","article-title":"Ion transport in sodium ion conducting solid electrolytes","volume":"227","author":"Fergus","year":"2012","journal-title":"Solid State Ion."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"16601","DOI":"10.1002\/chem.201501975","article-title":"On the Way to New Possible Na-Ion Conductors: The Voronoi-Dirichlet Approach, Data Mining and SymmetryConsideration in Ternary Na Oxides","volume":"21","author":"Meutzner","year":"2015","journal-title":"Chem. Eur. J."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"2000974","DOI":"10.1002\/aenm.202000974","article-title":"Materials Design for High-Safety Sodium-Ion Battery","volume":"11","author":"Yang","year":"2020","journal-title":"Adv. Energy Mater."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1800079","DOI":"10.1002\/aenm.201800079","article-title":"Sodium-Ion Battery Materials and Electrochemical Properties Reviewed","volume":"8","author":"Chayambuka","year":"2018","journal-title":"Adv. Energy. Mater."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"708","DOI":"10.1126\/science.aay9972","article-title":"Rational design of layered oxide materials for sodium-ion batteries","volume":"370","author":"Zhao","year":"2020","journal-title":"Sciense"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"131","DOI":"10.1134\/S1023193518020076","article-title":"Sodium-Ion Batteries (A Review)","volume":"54","author":"Skundin","year":"2018","journal-title":"Russ. J.Electrochem."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"129","DOI":"10.1016\/j.ssi.2017.11.008","article-title":"Crystallochemical tools in the search for cathode materials of rechargeable Na-ion batteries and analysis of their transport properties","volume":"314","author":"Fedotov","year":"2018","journal-title":"Solid State Ion."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"2331","DOI":"10.1007\/s10008-016-3255-y","article-title":"Evaluation of O3-type Na0.8Ni0.6Sb0.4O2 as cathode materials for sodium-ion batteries","volume":"20","author":"Han","year":"2016","journal-title":"J. Solid State Electrochem."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1023\/B:JECR.0000026373.56703.b0","article-title":"Stability and Termal Expansion of Na+-Conducting Ceramics","volume":"11","author":"Smirnova","year":"2003","journal-title":"J. Electroceram."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"51","DOI":"10.1016\/j.elecom.2014.10.003","article-title":"A quaternary layered cathode compound or rechargeable Na ion batteries","volume":"49","author":"Li","year":"2014","journal-title":"Electrochem. Commun."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"193","DOI":"10.1016\/0025-5408(79)90118-1","article-title":"Sur une nouvelle famille de formule Kx(Lx\/2Sn1-x\/2)O2 (L = Mg, Ca, Zn; x < 1)","volume":"14","author":"Maazaz","year":"1979","journal-title":"Mater. Res. Bull."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"81","DOI":"10.1016\/0378-4363(80)90214-4","article-title":"Structural classification and properties of the layered oxides","volume":"99","author":"Delmas","year":"1980","journal-title":"Phys. BC"},{"key":"ref_27","first-page":"716","article-title":"NaFe0.5Co0.5O2 as high energy and power positive electrode for Na-ionbatteries","volume":"80","author":"Yoshida","year":"2013","journal-title":"Electrochem. Commun."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"A3077","DOI":"10.1149\/2.007305jes","article-title":"Electrochemical and Thermal Properties of \u03b1-NaFeO2 Cathodefor Na-Ion Batteries","volume":"160","author":"Zhao","year":"2013","journal-title":"J. Electrochem. Soc."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"A1801","DOI":"10.1149\/2.0291412jes","article-title":"Structure and Electrochemistry ofNaxFexTi1-xO2 (1.0 \u2265 x \u2265 0.75) for Na-Ion Battery Positive Electrodes","volume":"161","author":"Thorne","year":"2014","journal-title":"J. Electrochem. Soc."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"3644","DOI":"10.1021\/acs.chemmater.9b00149","article-title":"Anionac Redox Acivity as a Key Factor in the Performance Degradation of NaFeO2 Cathodes for Sodium Ion Batteries","volume":"31","author":"Susanto","year":"2019","journal-title":"Chem. Mater."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"614","DOI":"10.1016\/0022-4596(71)90109-5","article-title":"Nonstoihiometric Alkali Ferrites and Aluminates in the Systems NaFeO2-TiO2,KFeO2-TiO2, KAlO2-TiO2 and KAlO2-SiO2","volume":"3","author":"Li","year":"1971","journal-title":"J. Solid State Chem."},{"key":"ref_32","first-page":"752","article-title":"Solid electrolytes in the Fe2O3-TiO2-Na2O system","volume":"21","author":"Burmakin","year":"1985","journal-title":"Elektrokhimiya"},{"key":"ref_33","first-page":"55","article-title":"Recent advances in magnetic structure determination by neutron powder diffraction","volume":"192B","year":"1993","journal-title":"Physica"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"426","DOI":"10.1107\/S0108768109019880","article-title":"Analysis of ion-migration paths in inorganic frameworks by means of tilings and Voronoi\u2013Dirichlet partition: A comparison","volume":"65","author":"Anurova","year":"2009","journal-title":"Acta Cryst."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"2248","DOI":"10.1016\/j.ssi.2008.08.001","article-title":"Migration maps of Li+ cations in oxygen-containing compounds","volume":"179","author":"Anurova","year":"2008","journal-title":"Solid State Ion."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"1167","DOI":"10.1016\/0025-5408(80)90081-1","article-title":"A preparation and polymorphic relations of sodium iron oxide (NaFeO2)","volume":"15","author":"Takeda","year":"1980","journal-title":"Mat. Res. Bull."},{"key":"ref_37","first-page":"1141","article-title":"Preparation et Proprietes des Ferrites de Sodium","volume":"51","author":"Collongues","year":"1959","journal-title":"Bull. Soc. Chim. France"},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"245","DOI":"10.1038\/249245a0","article-title":"NaAlO2 and NaFeO2Polymorphism","volume":"249","author":"West","year":"1974","journal-title":"Nature"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"51","DOI":"10.1524\/zkri.1990.193.1-2.51","article-title":"A neutron powder diffraction study of the \u03b2 to \u03b3 phase transformation in NaFeO2","volume":"193","author":"Grey","year":"1990","journal-title":"Z. Krist."},{"key":"ref_40","first-page":"773","article-title":"Synthetic zirconium and titanum garnets","volume":"52","author":"Ito","year":"1967","journal-title":"Amer. Mineral."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"751","DOI":"10.1107\/S0567739476001551","article-title":"Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides","volume":"32","author":"Shannon","year":"1976","journal-title":"Acta Cryst."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"2575","DOI":"10.1016\/j.jssc.2005.05.027","article-title":"High-resolution X-ray diffraction, DIFFaX, NMR and first principles study of disorder in the Li2MnO3\u2014Li[Ni1\/2Mn1\/2]O2 solid solutions","volume":"178","author":"Breger","year":"2005","journal-title":"J. Solid State Chem."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"195","DOI":"10.1016\/j.jssc.2013.11.017","article-title":"Structure and properties of \u03b1-NaFeO2-type ternary sodium iridates","volume":"210","author":"Baroudi","year":"2014","journal-title":"J. Solid State Chem."},{"key":"ref_44","first-page":"4","article-title":"Multipurpose crystallochemical analysis with the program package TOPOS","volume":"7","author":"Blatov","year":"2006","journal-title":"IUCr Comput. Comm. Newsl."},{"key":"ref_45","first-page":"3194","article-title":"Crystal Structure and Li-Ion Transport in Li2CoPO4F High-Voltage Cathode Material for Li-Ion Batteries","volume":"121C","author":"Fedotov","year":"2017","journal-title":"J. Phys. Chem."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"9","DOI":"10.1016\/0925-8388(93)90263-M","article-title":"Phase equilibrium studies in the Na-Fe-O system","volume":"191","author":"Sridharan","year":"1993","journal-title":"J. Alloys Compd."}],"container-title":["Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1944\/15\/10\/3612\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T23:14:15Z","timestamp":1760138055000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1944\/15\/10\/3612"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,5,18]]},"references-count":46,"journal-issue":{"issue":"10","published-online":{"date-parts":[[2022,5]]}},"alternative-id":["ma15103612"],"URL":"https:\/\/doi.org\/10.3390\/ma15103612","relation":{},"ISSN":["1996-1944"],"issn-type":[{"value":"1996-1944","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,5,18]]}}}