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Suppressed phase transition and giant ionic conductivity in La(2)Mo(2)O(9) nanowires
Improving the ionic conductivity of solid electrolytes at low temperatures represents a major challenge and an opportunity for enabling a variety of solid-state ionic devices for energy conversion and storage, as well as for environmental protection. Here we report a giant ionic conductivity of 0.20...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Pub. Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4595754/ https://www.ncbi.nlm.nih.gov/pubmed/26380943 http://dx.doi.org/10.1038/ncomms9354 |
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author | Liu, Wei Pan, Wei Luo, Jian Godfrey, Andy Ou, Gang Wu, Hui Zhang, Wei |
author_facet | Liu, Wei Pan, Wei Luo, Jian Godfrey, Andy Ou, Gang Wu, Hui Zhang, Wei |
author_sort | Liu, Wei |
collection | PubMed |
description | Improving the ionic conductivity of solid electrolytes at low temperatures represents a major challenge and an opportunity for enabling a variety of solid-state ionic devices for energy conversion and storage, as well as for environmental protection. Here we report a giant ionic conductivity of 0.20 Scm(−1), achieved at 500 °C, in the La(2)Mo(2)O(9) nanowires with a bamboo-wire morphology, corresponding to a 1000-fold enhancement in conductivity over conventional bulk material. Stabilization of the high-temperature phase is observed to account for about a 10-fold increase in the conductivity. We further demonstrate that fast surface conduction in ∼3 nm thick, partially ordered, surface ‘amorphous' films, under strain on the curved surfaces of the nanowires (as a non-autonomous surface phase or complexion), contributes to an enhancement of the conductivity by another two orders of magnitude. Exemplified here by the study of the La(2)Mo(2)O(9) nanowires, new possibilities for improvement of conductivity and for miniaturization of solid-state ionic devices by the careful use of one-dimensional nanomaterials can be envisioned. |
format | Online Article Text |
id | pubmed-4595754 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Pub. Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-45957542015-10-21 Suppressed phase transition and giant ionic conductivity in La(2)Mo(2)O(9) nanowires Liu, Wei Pan, Wei Luo, Jian Godfrey, Andy Ou, Gang Wu, Hui Zhang, Wei Nat Commun Article Improving the ionic conductivity of solid electrolytes at low temperatures represents a major challenge and an opportunity for enabling a variety of solid-state ionic devices for energy conversion and storage, as well as for environmental protection. Here we report a giant ionic conductivity of 0.20 Scm(−1), achieved at 500 °C, in the La(2)Mo(2)O(9) nanowires with a bamboo-wire morphology, corresponding to a 1000-fold enhancement in conductivity over conventional bulk material. Stabilization of the high-temperature phase is observed to account for about a 10-fold increase in the conductivity. We further demonstrate that fast surface conduction in ∼3 nm thick, partially ordered, surface ‘amorphous' films, under strain on the curved surfaces of the nanowires (as a non-autonomous surface phase or complexion), contributes to an enhancement of the conductivity by another two orders of magnitude. Exemplified here by the study of the La(2)Mo(2)O(9) nanowires, new possibilities for improvement of conductivity and for miniaturization of solid-state ionic devices by the careful use of one-dimensional nanomaterials can be envisioned. Nature Pub. Group 2015-09-18 /pmc/articles/PMC4595754/ /pubmed/26380943 http://dx.doi.org/10.1038/ncomms9354 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Liu, Wei Pan, Wei Luo, Jian Godfrey, Andy Ou, Gang Wu, Hui Zhang, Wei Suppressed phase transition and giant ionic conductivity in La(2)Mo(2)O(9) nanowires |
title | Suppressed phase transition and giant ionic conductivity in La(2)Mo(2)O(9) nanowires |
title_full | Suppressed phase transition and giant ionic conductivity in La(2)Mo(2)O(9) nanowires |
title_fullStr | Suppressed phase transition and giant ionic conductivity in La(2)Mo(2)O(9) nanowires |
title_full_unstemmed | Suppressed phase transition and giant ionic conductivity in La(2)Mo(2)O(9) nanowires |
title_short | Suppressed phase transition and giant ionic conductivity in La(2)Mo(2)O(9) nanowires |
title_sort | suppressed phase transition and giant ionic conductivity in la(2)mo(2)o(9) nanowires |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4595754/ https://www.ncbi.nlm.nih.gov/pubmed/26380943 http://dx.doi.org/10.1038/ncomms9354 |
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