Sodium-rich solid state reaction synthesis of sodium tri-titanate for AMTEC application
Alkali-Metal-Thermal-Electric-Converter systems (AMTEC-systems) pose a promising approach for energy conversion, e.g. from waste heat. Central components are a gas-tight ion-conductive solid membrane and an enclosed porous electrode. The presented study covers an adapted synthesis routine for single...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Open Ceramics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666539524000233 |
| _version_ | 1797249105738596352 |
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| author | Marc Neumann Cordula Conrad Ronny Schimpke Florian Kerber Patrick Gehre Tilo Zienert Christos G. Aneziris |
| author_facet | Marc Neumann Cordula Conrad Ronny Schimpke Florian Kerber Patrick Gehre Tilo Zienert Christos G. Aneziris |
| author_sort | Marc Neumann |
| collection | DOAJ |
| description | Alkali-Metal-Thermal-Electric-Converter systems (AMTEC-systems) pose a promising approach for energy conversion, e.g. from waste heat. Central components are a gas-tight ion-conductive solid membrane and an enclosed porous electrode. The presented study covers an adapted synthesis routine for single-phase sodium-tritanate (Na2Ti3O7) and its assessment as an alternative AMTEC-membrane-material. In contrast to the conventional stoichiometric solid state reaction between sodium carbonate and titania, the adapted synthesis reaction was performed with sodium excess. Up to 900 °C, the as-synthesised material evinced both, a constant thermal expansion behaviour over various thermal cycles and an expected electric conductivity. More important, phase stability either in pure state as well as in contact with a potential electrode material (La0.8Sr0.2)0.98MnO3 was demonstrated by long term exposure at 900 °C over 240 h. According to those findings the synthesised Na2Ti3O7 is considered to be an alternative membrane-material for AMTEC-application. |
| first_indexed | 2024-03-07T16:53:23Z |
| format | Article |
| id | doaj.art-c01dd841380347f9a9adfcb4d68ca801 |
| institution | Directory Open Access Journal |
| issn | 2666-5395 |
| language | English |
| last_indexed | 2024-04-24T20:25:12Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Open Ceramics |
| spelling | doaj.art-c01dd841380347f9a9adfcb4d68ca8012024-03-22T05:40:57ZengElsevierOpen Ceramics2666-53952024-03-0117100559Sodium-rich solid state reaction synthesis of sodium tri-titanate for AMTEC applicationMarc Neumann0Cordula Conrad1Ronny Schimpke2Florian Kerber3Patrick Gehre4Tilo Zienert5Christos G. Aneziris6Institute of Ceramics, Refractories and Composite Materials, Technical University Bergakademie Freiberg, Germany; Corresponding author.Institute of Ceramics, Refractories and Composite Materials, Technical University Bergakademie Freiberg, GermanyInstitute of Energy Process Engineering and Chemical Engineering, TU Bergakademie Freiberg, GermanyInstitute of Ceramics, Refractories and Composite Materials, Technical University Bergakademie Freiberg, GermanyInstitute of Ceramics, Refractories and Composite Materials, Technical University Bergakademie Freiberg, GermanyInstitute of Ceramics, Refractories and Composite Materials, Technical University Bergakademie Freiberg, GermanyInstitute of Ceramics, Refractories and Composite Materials, Technical University Bergakademie Freiberg, GermanyAlkali-Metal-Thermal-Electric-Converter systems (AMTEC-systems) pose a promising approach for energy conversion, e.g. from waste heat. Central components are a gas-tight ion-conductive solid membrane and an enclosed porous electrode. The presented study covers an adapted synthesis routine for single-phase sodium-tritanate (Na2Ti3O7) and its assessment as an alternative AMTEC-membrane-material. In contrast to the conventional stoichiometric solid state reaction between sodium carbonate and titania, the adapted synthesis reaction was performed with sodium excess. Up to 900 °C, the as-synthesised material evinced both, a constant thermal expansion behaviour over various thermal cycles and an expected electric conductivity. More important, phase stability either in pure state as well as in contact with a potential electrode material (La0.8Sr0.2)0.98MnO3 was demonstrated by long term exposure at 900 °C over 240 h. According to those findings the synthesised Na2Ti3O7 is considered to be an alternative membrane-material for AMTEC-application.http://www.sciencedirect.com/science/article/pii/S2666539524000233Alkali metalSodium titanateElectrochemical impedance spectroscopyChemical stabilityThermal expansion |
| spellingShingle | Marc Neumann Cordula Conrad Ronny Schimpke Florian Kerber Patrick Gehre Tilo Zienert Christos G. Aneziris Sodium-rich solid state reaction synthesis of sodium tri-titanate for AMTEC application Open Ceramics Alkali metal Sodium titanate Electrochemical impedance spectroscopy Chemical stability Thermal expansion |
| title | Sodium-rich solid state reaction synthesis of sodium tri-titanate for AMTEC application |
| title_full | Sodium-rich solid state reaction synthesis of sodium tri-titanate for AMTEC application |
| title_fullStr | Sodium-rich solid state reaction synthesis of sodium tri-titanate for AMTEC application |
| title_full_unstemmed | Sodium-rich solid state reaction synthesis of sodium tri-titanate for AMTEC application |
| title_short | Sodium-rich solid state reaction synthesis of sodium tri-titanate for AMTEC application |
| title_sort | sodium rich solid state reaction synthesis of sodium tri titanate for amtec application |
| topic | Alkali metal Sodium titanate Electrochemical impedance spectroscopy Chemical stability Thermal expansion |
| url | http://www.sciencedirect.com/science/article/pii/S2666539524000233 |
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