On the origin of the non-Arrhenius Na-ion conductivity in Na3OBr
The sodium-rich antiperovskites (NaRAPs) with composition Na<sub>3</sub>OB (B=Br, Cl, I, BH<sub>4</sub>, etc.) are a family of materials that has recently attracted great interest for application as solid electrolytes in sodium metal batteries. Non-Arrhenius ionic conductivit...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Wiley
2023
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| _version_ | 1826312460693405696 |
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| author | Darminto, B Rees, GJ Cattermull, J Hashi, K Diaz-Lopez, M Kuwata, N Turrell, SJ Milan, E Chart, Y Di Mino, C Lee, HJ Goodwin, AL Pasta, M |
| author_facet | Darminto, B Rees, GJ Cattermull, J Hashi, K Diaz-Lopez, M Kuwata, N Turrell, SJ Milan, E Chart, Y Di Mino, C Lee, HJ Goodwin, AL Pasta, M |
| author_sort | Darminto, B |
| collection | OXFORD |
| description | The sodium-rich antiperovskites (NaRAPs) with composition Na<sub>3</sub>OB (B=Br, Cl, I, BH<sub>4</sub>, etc.) are a family of materials that has recently attracted great interest for application as solid electrolytes in sodium metal batteries. Non-Arrhenius ionic conductivities have been reported for these materials, the origin of which is poorly understood. In this work, we combined temperature-resolved bulk and local characterisation methods to gain an insight into the origin of this unusual behaviour using Na<sub>3</sub>OBr as a model system. We first excluded crystallographic disorder on the anion sites as the cause of the change in activation energy; then identified the presence of a poorly crystalline impurities, not detectable by XRD, and elucidated their effect on ionic conductivity. These findings improve understanding of the processing-structure-properties relationships pertaining to NaRAPs and highlight the need to determine these relationships in other materials systems, which will accelerate the development of high-performance solid electrolytes. |
| first_indexed | 2024-03-07T08:12:46Z |
| format | Journal article |
| id | oxford-uuid:839e3e17-a2d4-45a2-bdf3-b06ae3ea539e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-04-09T03:54:55Z |
| publishDate | 2023 |
| publisher | Wiley |
| record_format | dspace |
| spelling | oxford-uuid:839e3e17-a2d4-45a2-bdf3-b06ae3ea539e2024-03-08T11:36:06ZOn the origin of the non-Arrhenius Na-ion conductivity in Na3OBrJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:839e3e17-a2d4-45a2-bdf3-b06ae3ea539eEnglishSymplectic ElementsWiley2023Darminto, BRees, GJCattermull, JHashi, KDiaz-Lopez, MKuwata, NTurrell, SJMilan, EChart, YDi Mino, CLee, HJGoodwin, ALPasta, MThe sodium-rich antiperovskites (NaRAPs) with composition Na<sub>3</sub>OB (B=Br, Cl, I, BH<sub>4</sub>, etc.) are a family of materials that has recently attracted great interest for application as solid electrolytes in sodium metal batteries. Non-Arrhenius ionic conductivities have been reported for these materials, the origin of which is poorly understood. In this work, we combined temperature-resolved bulk and local characterisation methods to gain an insight into the origin of this unusual behaviour using Na<sub>3</sub>OBr as a model system. We first excluded crystallographic disorder on the anion sites as the cause of the change in activation energy; then identified the presence of a poorly crystalline impurities, not detectable by XRD, and elucidated their effect on ionic conductivity. These findings improve understanding of the processing-structure-properties relationships pertaining to NaRAPs and highlight the need to determine these relationships in other materials systems, which will accelerate the development of high-performance solid electrolytes. |
| spellingShingle | Darminto, B Rees, GJ Cattermull, J Hashi, K Diaz-Lopez, M Kuwata, N Turrell, SJ Milan, E Chart, Y Di Mino, C Lee, HJ Goodwin, AL Pasta, M On the origin of the non-Arrhenius Na-ion conductivity in Na3OBr |
| title | On the origin of the non-Arrhenius Na-ion conductivity in Na3OBr |
| title_full | On the origin of the non-Arrhenius Na-ion conductivity in Na3OBr |
| title_fullStr | On the origin of the non-Arrhenius Na-ion conductivity in Na3OBr |
| title_full_unstemmed | On the origin of the non-Arrhenius Na-ion conductivity in Na3OBr |
| title_short | On the origin of the non-Arrhenius Na-ion conductivity in Na3OBr |
| title_sort | on the origin of the non arrhenius na ion conductivity in na3obr |
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