La3TaO7 derivatives with Weberite structure type: Possible electrolytes for solid oxide fuel cells and high temperature electrolysers
In this study, with the aim to enhance the ionic conduction of known structures by defect chemistry, the La2O3-Ta2O5 system was considered with a focus on the La3TaO7 phase whose structure is of Weberite type. In order to predict possible preferential substitution sites and substitution elements, at...
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| Veröffentlicht in: | Comptes rendus. Chimie 2010-11, Vol.13 (11), p.1351-1358 |
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| container_title | Comptes rendus. Chimie |
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| creator | PREUX, Nicolas ROLLE, Aurélie MERLIN, Cindy BENAMIRA, Messaoud MALYS, Marcin ESTOURNES, Claude RUBBENS, Annick VANNIER, Rose-Noëlle |
| description | In this study, with the aim to enhance the ionic conduction of known structures by defect chemistry, the La2O3-Ta2O5 system was considered with a focus on the La3TaO7 phase whose structure is of Weberite type. In order to predict possible preferential substitution sites and substitution elements, atomistic simulation was used as a first approach. A solid solution La3−xSrxTaO7−x/2 was confirmed by X-ray diffraction and Raman spectroscopy; it extends for a substitution ratio up to x = 0.15. Whereas La3TaO7 is a poor oxide ion conductor (σ700 °C = 2 × 10−5S.cm−1), at 700 °C, its ionic conductivity is increased by more than one order of magnitude when 3.3% molar strontium is introduced in the structure (σ700 °C = 2 × 10−4S.cm−1). |
| doi_str_mv | 10.1016/j.crci.2010.07.009 |
| format | Article |
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Thermal use of fuels</subject><subject>Engineering Sciences</subject><subject>Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc</subject><subject>Exact sciences and technology</subject><subject>Fuel cells</subject><subject>General and physical chemistry</subject><subject>Material chemistry</subject><subject>Materials</subject><subject>Properties of electrolytes: conductivity</subject><issn>1631-0748</issn><issn>1878-1543</issn><issn>1878-1543</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNo9kMFKAzEQhhdRsFZfwFMuHjxsTTa7ya63UtQKhXqoeAxJduKmpN2SpNU-gO9taqWnGX7-b2C-LLsleEQwYQ_LkfbajgqcAsxHGDdn2YDUvM5JVdLztDNKcszL-jK7CmGJE9RUbJD9zCRdyDlHLXi7k9HuIKAvGzv0ASpFEVCIfqvj1gOK-w08orc-BKscIHCgo-_dPibG9B6F3tkW9d-2BWS24JAG5wKS6xZ19rNDEVYb8PLv1gkO4MN1dmGkC3DzP4fZ-_PTYjLNZ_OX18l4lmtaVTE3nJKKVKqkrKEM6oYUhPFWgTFlrWqppTRYaqYqpluFa52iEhOleMELUnA6zO6PdzvpxMbblfR70UsrpuOZOGSYcMoKVu1I6hbHrvbpYQ_mBBAsDtLFUhyki4N0gblI0hN0d4Q2MmjpjJdrbcOJLCgteU05_QVbHoYO</recordid><startdate>20101101</startdate><enddate>20101101</enddate><creator>PREUX, Nicolas</creator><creator>ROLLE, Aurélie</creator><creator>MERLIN, Cindy</creator><creator>BENAMIRA, Messaoud</creator><creator>MALYS, Marcin</creator><creator>ESTOURNES, Claude</creator><creator>RUBBENS, Annick</creator><creator>VANNIER, Rose-Noëlle</creator><general>Elsevier</general><general>Académie des sciences (Paris)</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope><scope>VOOES</scope><orcidid>https://orcid.org/0000-0002-7494-9230</orcidid></search><sort><creationdate>20101101</creationdate><title>La3TaO7 derivatives with Weberite structure type: Possible electrolytes for solid oxide fuel cells and high temperature electrolysers</title><author>PREUX, Nicolas ; ROLLE, Aurélie ; MERLIN, Cindy ; BENAMIRA, Messaoud ; MALYS, Marcin ; ESTOURNES, Claude ; RUBBENS, Annick ; VANNIER, Rose-Noëlle</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c355t-f731515b436936e8912167dbeff48b8acaaf0ac6b56cdb08c8ac401bb72721273</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Analytical chemistry</topic><topic>Applied sciences</topic><topic>Chemical Sciences</topic><topic>Chemistry</topic><topic>Electrochemistry</topic><topic>Energy</topic><topic>Energy. 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| source | Elektronische Zeitschriftenbibliothek (Open access); ScienceDirect Freedom Collection (Elsevier) |
| subjects | Analytical chemistry Applied sciences Chemical Sciences Chemistry Electrochemistry Energy Energy. Thermal use of fuels Engineering Sciences Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc Exact sciences and technology Fuel cells General and physical chemistry Material chemistry Materials Properties of electrolytes: conductivity |
| title | La3TaO7 derivatives with Weberite structure type: Possible electrolytes for solid oxide fuel cells and high temperature electrolysers |
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