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Fast Oxide-Ion Conductors in Bi2O3-V2O5 System: Bi108-xVxO162+x(x=4-9) with 3 x 3 x 3 Superstructure
dc.creator | Dapčević, Aleksandra | |
dc.creator | Radojkovic, A. | |
dc.creator | Zunic, M. | |
dc.creator | Pocuca-Nesic, M. | |
dc.creator | Milosevic, O. | |
dc.creator | Brankovic, G. | |
dc.date.accessioned | 2022-03-04T11:25:17Z | |
dc.date.available | 2022-03-04T11:25:17Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 0350-820X | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4939 | |
dc.description.abstract | In this study, the possibility to stabilize O-2 ion conductors in Bi2O3-V2O5 system was investigated. Six pseudo-binary Bi2O3-V2O5 mixtures [3.50 lt x(V2O5) lt 8.50 mol%] were thermally treated at 1000 degrees C for 1 h. The samples were characterized by XRD, HRTEM/SAED, DTA and EIS techniques. The high-temperature reaction between alpha Bi2O3 and V2O5 resulted in formation of microcrystalline single-phase specimens containing the phase based on delta-Bi2O3 if V2O5 content was >= 4.63 mol%. The obtained phases exhibited main diffraction peaks corresponding to the simple cubic delta-Bi2O3 (space group Fm-3m) but Rietveld refinement showed a threefold repeat on a simple cubic sublattice indicating that the true unit cell is 3x3x3 supercell. Within proposed supercell, the octahedrally coordinated V5+ ions fully occupy 4a Wyckoff position and partially occupy 32f. The Bi3+ ions are placed at the rest of 32f and at 24e and 48h with full occupation. In total, 22 % of anionic sites are vacant. The ionic conductivity of phase with the lowest dopant content, i.e. Bi103V5O167, amounts 0.283 S cm(-1) at 800 degrees C with the activation energy of 0.64(5) eV, which is comparable to the undoped delta-Bi2O3 known as the fastest ion conductor. | en |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200053/RS// | |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200135/RS// | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | Science of Sintering | |
dc.subject | Bi2O3 | en |
dc.subject | V2O5 | en |
dc.subject | Ion conductors | en |
dc.subject | Supercell | en |
dc.title | Fast Oxide-Ion Conductors in Bi2O3-V2O5 System: Bi108-xVxO162+x(x=4-9) with 3 x 3 x 3 Superstructure | en |
dc.type | article | |
dc.rights.license | BY | |
dc.citation.epage | 66 | |
dc.citation.issue | 1 | |
dc.citation.other | 53(1): 55-66 | |
dc.citation.rank | M22 | |
dc.citation.spage | 55 | |
dc.citation.volume | 53 | |
dc.identifier.doi | 10.2298/SOS2101055D | |
dc.identifier.fulltext | http://TechnoRep.tmf.bg.ac.rs/bitstream/id/7560/Fast_oxide-ion_conductors_pub_2021.pdf | |
dc.identifier.scopus | 2-s2.0-85103603059 | |
dc.identifier.wos | 000655069100005 | |
dc.type.version | publishedVersion |