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Solid-state synthesis of NASICON (Na3Zr2Si2PO12) using nanoparticle precursors for optimisation of ionic conductivity
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Lorn Jackson,
Tom Dunlop ,
Serena Margadonna ,
Davide Deganello
Journal of Materials Science, Volume: 55, Issue: 6, Pages: 2291 - 2302
Swansea University Authors:
Amir Jalalian-Khakshour, Christopher Phillips , Lorn Jackson, Tom Dunlop , Serena Margadonna , Davide Deganello
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DOI (Published version): 10.1007/s10853-019-04162-8
Abstract
In this work, the effect of varying the size of the precursor raw materials SiO2 and ZrO2 in the solid-state synthesis of NASICON in the form Na3Zr2Si2PO12 was studied. Nanoscale and macro-scale precursor materials were selected for comparison purposes, and a range of sintering times were examined (...
| Published in: | Journal of Materials Science |
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| ISSN: | 0022-2461 1573-4803 |
| Published: |
Springer Science and Business Media LLC
2020
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa52708 |
| Abstract: |
In this work, the effect of varying the size of the precursor raw materials SiO2 and ZrO2 in the solid-state synthesis of NASICON in the form Na3Zr2Si2PO12 was studied. Nanoscale and macro-scale precursor materials were selected for comparison purposes, and a range of sintering times were examined (10, 24 and 40 h) at a temperature of 1230 °C. Na3Zr2Si2PO12 pellets produced from nanopowder precursors were found to produce substantially higher ionic conductivities, with improved morphology and higher density than those produced from larger micron-scaled precursors. The nanoparticle precursors were shown to give a maximum ionic conductivity of 1.16 × 10−3 S cm−1 when sintered at 1230 °C for 40 h, in the higher range of published solid-state Na3Zr2Si2PO12 conductivities. The macro-precursors gave lower ionic conductivity of 0.62 × 10−3 S cm−1 under the same processing conditions. Most current authors do not quote or consider the precursor particle size for solid-state synthesis of Na3Zr2Si2PO12. This study shows the importance of precursor powder particle size in the microstructure and performance of Na3Zr2Si2PO12 during solid-state synthesis and offers a route to improved predictability and consistency of the manufacturing process. |
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| College: |
Faculty of Science and Engineering |
| Funders: |
This project was funded by the EPSRC (UK) Grant number EP/N013727/1 and also by EP/R023581/1 and EP/N020863/1. SEM facilities were provided by the Swansea University AIM Facility; funded in part by the EPSRC (EP/M028267/1), the European Regional Development Fund through the Welsh Government (80708) and the Ser Solar project via Welsh Government. |
| Issue: |
6 |
| Start Page: |
2291 |
| End Page: |
2302 |