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Crystal Structure of Garnet-Related Li-Ion Conductor Li(7–3x)Ga(x)La(3)Zr(2)O(12): Fast Li-Ion Conduction Caused by a Different Cubic Modification?
[Image: see text] Li-oxide garnets such as Li(7)La(3)Zr(2)O(12) (LLZO) are among the most promising candidates for solid-state electrolytes to be used in next-generation Li-ion batteries. The garnet-structured cubic modification of LLZO, showing space group Ia-3d, has to be stabilized with supervale...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical
Society
2016
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4806310/ https://www.ncbi.nlm.nih.gov/pubmed/27019548 http://dx.doi.org/10.1021/acs.chemmater.6b00038 |
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author | Wagner, Reinhard Redhammer, Günther J. Rettenwander, Daniel Senyshyn, Anatoliy Schmidt, Walter Wilkening, Martin Amthauer, Georg |
author_facet | Wagner, Reinhard Redhammer, Günther J. Rettenwander, Daniel Senyshyn, Anatoliy Schmidt, Walter Wilkening, Martin Amthauer, Georg |
author_sort | Wagner, Reinhard |
collection | PubMed |
description | [Image: see text] Li-oxide garnets such as Li(7)La(3)Zr(2)O(12) (LLZO) are among the most promising candidates for solid-state electrolytes to be used in next-generation Li-ion batteries. The garnet-structured cubic modification of LLZO, showing space group Ia-3d, has to be stabilized with supervalent cations. LLZO stabilized with Ga(3+) shows superior properties compared to LLZO stabilized with similar cations; however, the reason for this behavior is still unknown. In this study, a comprehensive structural characterization of Ga-stabilized LLZO is performed by means of single-crystal X-ray diffraction. Coarse-grained samples with crystal sizes of several hundred micrometers are obtained by solid-state reaction. Single-crystal X-ray diffraction results show that Li(7–3x)Ga(x)La(3)Zr(2)O(12) with x > 0.07 crystallizes in the acentric cubic space group I-43d. This is the first definite record of this cubic modification for LLZO materials and might explain the superior electrochemical performance of Ga-stabilized LLZO compared to its Al-stabilized counterpart. The phase transition seems to be caused by the site preference of Ga(3+). (7)Li NMR spectroscopy indicates an additional Li-ion diffusion process for LLZO with space group I-43d compared to space group Ia-3d. Despite all efforts undertaken to reveal structure–property relationships for this class of materials, this study highlights the potential for new discoveries. |
format | Online Article Text |
id | pubmed-4806310 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | American Chemical
Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-48063102016-03-25 Crystal Structure of Garnet-Related Li-Ion Conductor Li(7–3x)Ga(x)La(3)Zr(2)O(12): Fast Li-Ion Conduction Caused by a Different Cubic Modification? Wagner, Reinhard Redhammer, Günther J. Rettenwander, Daniel Senyshyn, Anatoliy Schmidt, Walter Wilkening, Martin Amthauer, Georg Chem Mater [Image: see text] Li-oxide garnets such as Li(7)La(3)Zr(2)O(12) (LLZO) are among the most promising candidates for solid-state electrolytes to be used in next-generation Li-ion batteries. The garnet-structured cubic modification of LLZO, showing space group Ia-3d, has to be stabilized with supervalent cations. LLZO stabilized with Ga(3+) shows superior properties compared to LLZO stabilized with similar cations; however, the reason for this behavior is still unknown. In this study, a comprehensive structural characterization of Ga-stabilized LLZO is performed by means of single-crystal X-ray diffraction. Coarse-grained samples with crystal sizes of several hundred micrometers are obtained by solid-state reaction. Single-crystal X-ray diffraction results show that Li(7–3x)Ga(x)La(3)Zr(2)O(12) with x > 0.07 crystallizes in the acentric cubic space group I-43d. This is the first definite record of this cubic modification for LLZO materials and might explain the superior electrochemical performance of Ga-stabilized LLZO compared to its Al-stabilized counterpart. The phase transition seems to be caused by the site preference of Ga(3+). (7)Li NMR spectroscopy indicates an additional Li-ion diffusion process for LLZO with space group I-43d compared to space group Ia-3d. Despite all efforts undertaken to reveal structure–property relationships for this class of materials, this study highlights the potential for new discoveries. American Chemical Society 2016-02-10 2016-03-22 /pmc/articles/PMC4806310/ /pubmed/27019548 http://dx.doi.org/10.1021/acs.chemmater.6b00038 Text en Copyright © 2016 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. |
spellingShingle | Wagner, Reinhard Redhammer, Günther J. Rettenwander, Daniel Senyshyn, Anatoliy Schmidt, Walter Wilkening, Martin Amthauer, Georg Crystal Structure of Garnet-Related Li-Ion Conductor Li(7–3x)Ga(x)La(3)Zr(2)O(12): Fast Li-Ion Conduction Caused by a Different Cubic Modification? |
title | Crystal Structure of Garnet-Related Li-Ion Conductor
Li(7–3x)Ga(x)La(3)Zr(2)O(12): Fast Li-Ion Conduction
Caused by a Different Cubic Modification? |
title_full | Crystal Structure of Garnet-Related Li-Ion Conductor
Li(7–3x)Ga(x)La(3)Zr(2)O(12): Fast Li-Ion Conduction
Caused by a Different Cubic Modification? |
title_fullStr | Crystal Structure of Garnet-Related Li-Ion Conductor
Li(7–3x)Ga(x)La(3)Zr(2)O(12): Fast Li-Ion Conduction
Caused by a Different Cubic Modification? |
title_full_unstemmed | Crystal Structure of Garnet-Related Li-Ion Conductor
Li(7–3x)Ga(x)La(3)Zr(2)O(12): Fast Li-Ion Conduction
Caused by a Different Cubic Modification? |
title_short | Crystal Structure of Garnet-Related Li-Ion Conductor
Li(7–3x)Ga(x)La(3)Zr(2)O(12): Fast Li-Ion Conduction
Caused by a Different Cubic Modification? |
title_sort | crystal structure of garnet-related li-ion conductor
li(7–3x)ga(x)la(3)zr(2)o(12): fast li-ion conduction
caused by a different cubic modification? |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4806310/ https://www.ncbi.nlm.nih.gov/pubmed/27019548 http://dx.doi.org/10.1021/acs.chemmater.6b00038 |
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