Show simple item record

dc.contributor.authorShao, Lingbo
dc.contributor.authorJi, Dongdong
dc.contributor.authorYang, Jie
dc.contributor.authorXie, Jinsong
dc.contributor.authorYin, Qiyi
dc.contributor.authorLe, Huirong
dc.creatorChang′an, Tian
dc.date.accessioned2019-10-08T07:46:23Z
dc.date.available2019-10-08T07:46:23Z
dc.date.issued2019-09-30
dc.identifier.citationShao, L., Ji, D., Yang, J., Xie, J., Yin, Q. and Le, H., (2019). 'Synthesis and characterization of tungsten and barium co-doped La2Mo2O9 by sol-gel process for solid oxide fuel cells'. Journal of Rare Earths, 9, pp. 984-988. DOI: 10.1016/j.jre.2018.12.013.en_US
dc.identifier.issn10020721
dc.identifier.doi10.1016/j.jre.2018.12.013
dc.identifier.urihttp://hdl.handle.net/10545/624202
dc.description.abstractHerein, we demonstrate the synthesis of W and Ba co-doped La2Mo2O9 (LBMWO) nanocrystalline powder by a sol-gel process. In all the compositions have general formulae La1.9Ba0.1Mo2–xWxO8.95 (x = 0–0.40). The crystal structure, microstructure and conductivity of LBMWO were characterized by X-ray diffraction, scanning electron microscopy and electrical impedance spectroscopy. In addition, the thermal and decomposition properties of the LBMWO gel were analyzed by differential scanning calorimetry - thermogravimetric. The results reveal that all LBMWO powders calcined at 700 °C have a cubic structure; the average crystallite size is about 48 nm. The unit cell parameter of LBMWO powders increases with increase in W content. The as-synthesized nanocrystalline LBMWO samples exhibit excellent sinterability and a relatively lower sintering temperature of 900 °C. A high relative density of ∼96% is achieved after sintering at 900 °C which is in good agreement with the results of the SEM. Moreover, W and Ba co-doping suppresses the phase transition and effectively stabilizes the β-phase at low temperature. At the same time, La1.9Ba0.1Mo1.85W0.15O8.95 exhibits high ionic conductivity, 3.07 × 10−2 S/cm at 800 °C. It is therefore concluded that co-doping can improve the properties of La2Mo2O9 electrolytes.en_US
dc.description.sponsorshipHefei Universityen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofJournal of Rare Earths
dc.relation.urlhttps://www.sciencedirect.com/science/article/pii/S1002072118306392?via%3Dihuben_US
dc.rights© 2019 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/us/*
dc.subjectMaterials Scienceen_US
dc.subjectphase transitionen_US
dc.subjectconductivityen_US
dc.subjectsol-gelen_US
dc.subjectrare earthsen_US
dc.titleSynthesis and characterization of tungsten and barium co-doped La2Mo2O9 by sol-gel process for solid oxide fuel cellsen_US
dc.typeArticleen_US
dc.contributor.departmentHefei Universityen_US
dc.contributor.departmentUniversity of Derbyen_US
dc.identifier.journalJournal of Rare Earthsen_US
dc.identifier.eid1-s2.0-S1002072118306392
dc.identifier.piiS1002-0721(18)30639-2
dc.relation.volume37
dc.source.volume37
dc.source.issue9
dc.source.beginpage984
dc.source.endpage988
dcterms.dateAccepted2018-12-19
dc.author.detail784608en_US


Files in this item

Thumbnail
Name:
Publisher version

This item appears in the following Collection(s)

Show simple item record

© 2019 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.
Except where otherwise noted, this item's license is described as © 2019 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.