Preparation of Na-β″-Al<sub>2</sub>O<sub>3</sub> solid electrolyte with nano-η-Al<sub>2</sub>O<sub>3</sub> by double zeta process
Na-β″-Al<sub>2</sub>O<sub>3</sub> was prepared with nano-η-Al<sub>2</sub>O<sub>3</sub> powder by a double zeta process, MgO as stabilizer. The compactness, microstructure and mechanical properties of the samples were studied by Archimedes, SEM and thre...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2021-06-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.001059 |
| _version_ | 1797969603158081536 |
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| author | ZHANG Ling ZHENG Pei-yu ZHANG Xiao-xu ZHANG Chao ZHANG Huan |
| author_facet | ZHANG Ling ZHENG Pei-yu ZHANG Xiao-xu ZHANG Chao ZHANG Huan |
| author_sort | ZHANG Ling |
| collection | DOAJ |
| description | Na-β″-Al<sub>2</sub>O<sub>3</sub> was prepared with nano-η-Al<sub>2</sub>O<sub>3</sub> powder by a double zeta process, MgO as stabilizer. The compactness, microstructure and mechanical properties of the samples were studied by Archimedes, SEM and three-point bending method, and the β″-Al<sub>2</sub>O<sub>3</sub> phase content and ionic conductivity of the samples were studied by XRD and EIS. The results show that double zeta process is beneficial to improve the uniformity of sample structure. Nano-η-Al<sub>2</sub>O<sub>3</sub> is easier to synthesize Na-β″-Al<sub>2</sub>O<sub>3</sub> solid electrolyte than high purity α-Al<sub>2</sub>O<sub>3</sub>, the addition of appropriate MgO can increase the content of the β″-Al<sub>2</sub>O<sub>3</sub> phase and the compactness of the samples, reduce the grain boundary resistance of the sample and improve the ionic conductivity of the electrolyte. Excessive MgO doping results in the growth of pore size in the samples, which will increase the grain resistance and decrease the ionic conductivity. The ionic conductivity of the electrolyte material reaches 0.0396 S·cm<sup>-1</sup> at 300 ℃ when the amount of MgO is 2% (mass fraction). |
| first_indexed | 2024-04-11T03:04:56Z |
| format | Article |
| id | doaj.art-5c62017a4fd64328bee425dea0892402 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T03:04:56Z |
| publishDate | 2021-06-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-5c62017a4fd64328bee425dea08924022023-01-02T13:24:42ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812021-06-0149614014710.11868/j.issn.1001-4381.2019.00105920210616Preparation of Na-β″-Al<sub>2</sub>O<sub>3</sub> solid electrolyte with nano-η-Al<sub>2</sub>O<sub>3</sub> by double zeta processZHANG Ling0ZHENG Pei-yu1ZHANG Xiao-xu2ZHANG Chao3ZHANG Huan4College of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, Liaoning, ChinaCollege of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, Liaoning, ChinaCollege of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, Liaoning, ChinaCollege of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, Liaoning, ChinaCollege of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, Liaoning, ChinaNa-β″-Al<sub>2</sub>O<sub>3</sub> was prepared with nano-η-Al<sub>2</sub>O<sub>3</sub> powder by a double zeta process, MgO as stabilizer. The compactness, microstructure and mechanical properties of the samples were studied by Archimedes, SEM and three-point bending method, and the β″-Al<sub>2</sub>O<sub>3</sub> phase content and ionic conductivity of the samples were studied by XRD and EIS. The results show that double zeta process is beneficial to improve the uniformity of sample structure. Nano-η-Al<sub>2</sub>O<sub>3</sub> is easier to synthesize Na-β″-Al<sub>2</sub>O<sub>3</sub> solid electrolyte than high purity α-Al<sub>2</sub>O<sub>3</sub>, the addition of appropriate MgO can increase the content of the β″-Al<sub>2</sub>O<sub>3</sub> phase and the compactness of the samples, reduce the grain boundary resistance of the sample and improve the ionic conductivity of the electrolyte. Excessive MgO doping results in the growth of pore size in the samples, which will increase the grain resistance and decrease the ionic conductivity. The ionic conductivity of the electrolyte material reaches 0.0396 S·cm<sup>-1</sup> at 300 ℃ when the amount of MgO is 2% (mass fraction).http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.001059nano-η-al<sub>2</sub>o<sub>3</sub>na-β″-al<sub>2</sub>o<sub>3</sub>double zeta processmagnesium oxideelectrical conductivity |
| spellingShingle | ZHANG Ling ZHENG Pei-yu ZHANG Xiao-xu ZHANG Chao ZHANG Huan Preparation of Na-β″-Al<sub>2</sub>O<sub>3</sub> solid electrolyte with nano-η-Al<sub>2</sub>O<sub>3</sub> by double zeta process Cailiao gongcheng nano-η-al<sub>2</sub>o<sub>3</sub> na-β″-al<sub>2</sub>o<sub>3</sub> double zeta process magnesium oxide electrical conductivity |
| title | Preparation of Na-β″-Al<sub>2</sub>O<sub>3</sub> solid electrolyte with nano-η-Al<sub>2</sub>O<sub>3</sub> by double zeta process |
| title_full | Preparation of Na-β″-Al<sub>2</sub>O<sub>3</sub> solid electrolyte with nano-η-Al<sub>2</sub>O<sub>3</sub> by double zeta process |
| title_fullStr | Preparation of Na-β″-Al<sub>2</sub>O<sub>3</sub> solid electrolyte with nano-η-Al<sub>2</sub>O<sub>3</sub> by double zeta process |
| title_full_unstemmed | Preparation of Na-β″-Al<sub>2</sub>O<sub>3</sub> solid electrolyte with nano-η-Al<sub>2</sub>O<sub>3</sub> by double zeta process |
| title_short | Preparation of Na-β″-Al<sub>2</sub>O<sub>3</sub> solid electrolyte with nano-η-Al<sub>2</sub>O<sub>3</sub> by double zeta process |
| title_sort | preparation of na β al sub 2 sub o sub 3 sub solid electrolyte with nano η al sub 2 sub o sub 3 sub by double zeta process |
| topic | nano-η-al<sub>2</sub>o<sub>3</sub> na-β″-al<sub>2</sub>o<sub>3</sub> double zeta process magnesium oxide electrical conductivity |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.001059 |
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