Brigita Darminto
;
Gregory J. Rees
;
John Cattermull
;
Kenjiro Hashi
(National Institute for Materials Science)
;
Maria Diaz‐Lopez
;
Naoaki Kuwata
(National Institute for Materials Science)
;
Stephen J. Turrell
;
Emily Milan
;
Yvonne Chart
;
Camilla Di Mino
;
Hyeon Jeong Lee
;
Andrew L. Goodwin
;
Mauro Pasta
Collection
Citation
Description:
(abstract)The sodium-rich antiperovskites (NaRAPs) with composition Na3OB (B = Br, Cl, I, BH4, 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 Na3OBr 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 Na2O2 impurity, not detectable by XRD, and elucidated its effect on ionic conductivity. These findings will be of significant practical value to researchers attempting to improve the ionic conductivity of NaRAPs.
Rights:
Keyword: Solid-state battery, Sodium ion conductor, Antiperovskites
Date published: 2023-12-18
Publisher: Wiley
Journal:
- Angewandte Chemie International Edition (ISSN: 00448249) vol. 62 issue. 51 e202314444
Funding:
- Faraday Institution FIRG056
- Engineering and Physical Sciences Research Council
- Biotechnology and Biological Sciences Research Council EP/T015063/1
- Biotechnology and Biological Sciences Research Council EP/R029946/1
- University of Warwick
- Advantage West Midlands Birmingham Science City Advanced Materials Projects 1 and 2
- European Regional Development Fund
- Science and Technology Facilities Council CY29776
- Science and Technology Facilities Council CM31137
- Henry Royce Institute EP/R010145/1
- H2020 European Research Council Advanced Grant 788144
- Lembaga Pengelola Dana Pendidikan
Manuscript type: Publisher's version (Version of record)
MDR DOI:
First published URL: https://doi.org/10.1002/anie.202314444
Related item:
Other identifier(s):
Contact agent:
Updated at: 2024-12-04 14:52:54 +0900
Published on MDR: 2024-12-04 14:52:54 +0900
| Filename | Size | |||
|---|---|---|---|---|
| Filename |
Darminto2023 - Darminto - On the Origin of the Non‐Arrhenius Na‐ion Conductivity in Na3OBr.pdf
(Thumbnail)
application/pdf |
Size | 1.64 MB | Detail |