Adetona, A.J., Wang, G. orcid.org/0000-0003-1842-8067, Walkley, B. orcid.org/0000-0003-1069-1362 et al. (2 more authors) (2024) Effect of ZrO2 stoichiometry on the structural and electrical properties of Na3Zr2−xSi2PO12-2x solid electrolyte. Journal of the European Ceramic Society, 44 (5). pp. 2989-2997. ISSN 0955-2219
Abstract
Na3Zr2Si2P2O12 (NZSP) has potential use as a solid electrolyte in Na-ion solid-state batteries due to its high ionic conductivity (10−3–10−4 Scm−1) at room temperature. It is established that all previous preparations involving the solid-state method for NZSP compositions contain m-ZrO2 as a secondary phase. Here, the solid-state method is used to prepare single-phase NZSP by modifying the mole fractions of the ZrO2 reactant. Reducing ZrO2 concentration may also create Zr and O vacancies and potentially increase the hopping sites for Na-ion conduction. X-ray diffraction, scanning electron microscopy, Raman and Fourier Transform Infrared spectroscopy, dilatometry and impedance spectroscopy were used to characterise the structure, morphology and electrical properties of single-phase NZSP, and the results were compared with samples that have m-ZrO2 secondary phase (Na3Zr2Si2PO12). The role of m-ZrO2 impurities on the conductivity of NZSP is investigated and compared with available literature.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
Keywords: | NASICON; Solid electrolyte; Solid-state method; Scanning electron microscopy; Electrochemical Impedance Spectroscopy |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Chemical and Biological Engineering (Sheffield) The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 10 Jan 2024 12:16 |
Last Modified: | 01 Nov 2024 16:08 |
Status: | Published |
Publisher: | Elsevier BV |
Refereed: | Yes |
Identification Number: | 10.1016/j.jeurceramsoc.2023.12.071 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:207437 |