Mechanosynthesis of Sr^sub 1-x^La^sub x^TiO^sub 3^ anodes for SOFCs: Structure and electrical conductivity
Sr1-xLaxTiO3 (SLT; 0 ≤ x ≤ 0.5) powder samples were synthesised at room temperature by a mechanochemical method from SrO, La2O3 and TiO2 mixtures in 90 min. The obtained SLT samples as potential anode materials in solid oxide fuel cells (SOFCs) were investigated. The microstructure, electrical condu...
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| Veröffentlicht in: | Journal of alloys and compounds 2018-09, Vol.763, p.679 |
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| creator | Sayagués, MJ Gotor, FJ Pueyo, M Poyato, R Garcia-Garcia, FJ |
| description | Sr1-xLaxTiO3 (SLT; 0 ≤ x ≤ 0.5) powder samples were synthesised at room temperature by a mechanochemical method from SrO, La2O3 and TiO2 mixtures in 90 min. The obtained SLT samples as potential anode materials in solid oxide fuel cells (SOFCs) were investigated. The microstructure, electrical conductivity and chemical compatibility with yttria-stabilised zirconia (YSZ) were studied. The powder samples had a nanometric character after milling. After a subsequently heating at 900 °C, the particle size slightly increased, but still remained nanometric. At this high temperature, a good chemical compatibility with YSZ was found. The x = 0.2 sample gave the best electrical conductivity values, i.e. 0.23 W cm−2. These features make such as-obtained samples good candidates to be used as anodes in SOFCs. |
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The obtained SLT samples as potential anode materials in solid oxide fuel cells (SOFCs) were investigated. The microstructure, electrical conductivity and chemical compatibility with yttria-stabilised zirconia (YSZ) were studied. The powder samples had a nanometric character after milling. After a subsequently heating at 900 °C, the particle size slightly increased, but still remained nanometric. At this high temperature, a good chemical compatibility with YSZ was found. The x = 0.2 sample gave the best electrical conductivity values, i.e. 0.23 W cm−2. These features make such as-obtained samples good candidates to be used as anodes in SOFCs.</description><identifier>ISSN: 0925-8388</identifier><identifier>EISSN: 1873-4669</identifier><language>eng</language><publisher>Lausanne: Elsevier BV</publisher><subject>Anodes ; Chemical compatibility ; Conductivity ; Electric currents ; Electrical resistivity ; Electrode materials ; Lanthanum oxides ; Organic chemistry ; Perovskite ; Solid oxide fuel cells ; Titanium dioxide ; Yttria-stabilized zirconia ; Yttrium oxide ; Zirconium dioxide</subject><ispartof>Journal of alloys and compounds, 2018-09, Vol.763, p.679</ispartof><rights>Copyright Elsevier BV Sep 30, 2018</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780</link.rule.ids></links><search><creatorcontrib>Sayagués, MJ</creatorcontrib><creatorcontrib>Gotor, FJ</creatorcontrib><creatorcontrib>Pueyo, M</creatorcontrib><creatorcontrib>Poyato, R</creatorcontrib><creatorcontrib>Garcia-Garcia, FJ</creatorcontrib><title>Mechanosynthesis of Sr^sub 1-x^La^sub x^TiO^sub 3^ anodes for SOFCs: Structure and electrical conductivity</title><title>Journal of alloys and compounds</title><description>Sr1-xLaxTiO3 (SLT; 0 ≤ x ≤ 0.5) powder samples were synthesised at room temperature by a mechanochemical method from SrO, La2O3 and TiO2 mixtures in 90 min. The obtained SLT samples as potential anode materials in solid oxide fuel cells (SOFCs) were investigated. The microstructure, electrical conductivity and chemical compatibility with yttria-stabilised zirconia (YSZ) were studied. The powder samples had a nanometric character after milling. After a subsequently heating at 900 °C, the particle size slightly increased, but still remained nanometric. At this high temperature, a good chemical compatibility with YSZ was found. The x = 0.2 sample gave the best electrical conductivity values, i.e. 0.23 W cm−2. 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The obtained SLT samples as potential anode materials in solid oxide fuel cells (SOFCs) were investigated. The microstructure, electrical conductivity and chemical compatibility with yttria-stabilised zirconia (YSZ) were studied. The powder samples had a nanometric character after milling. After a subsequently heating at 900 °C, the particle size slightly increased, but still remained nanometric. At this high temperature, a good chemical compatibility with YSZ was found. The x = 0.2 sample gave the best electrical conductivity values, i.e. 0.23 W cm−2. These features make such as-obtained samples good candidates to be used as anodes in SOFCs.</abstract><cop>Lausanne</cop><pub>Elsevier BV</pub></addata></record> |
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| ispartof | Journal of alloys and compounds, 2018-09, Vol.763, p.679 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Anodes Chemical compatibility Conductivity Electric currents Electrical resistivity Electrode materials Lanthanum oxides Organic chemistry Perovskite Solid oxide fuel cells Titanium dioxide Yttria-stabilized zirconia Yttrium oxide Zirconium dioxide |
| title | Mechanosynthesis of Sr^sub 1-x^La^sub x^TiO^sub 3^ anodes for SOFCs: Structure and electrical conductivity |
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