Reduced Energy Barrier for Li(+) Transport Across Grain Boundaries with Amorphous Domains in LLZO Thin Films

The high-resistive grain boundaries are the bottleneck for Li(+) transport in Li(7)La(3)Zr(2)O(12) (LLZO) solid electrolytes. Herein, high-conductive LLZO thin films with cubic phase and amorphous domains between crystalline grains are prepared, via annealing the repetitive LLZO/Li(2)CO(3)/Ga(2)O(3)...

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Autores principales: Zhu, Yanlin, Wu, Shuai, Pan, Yilan, Zhang, Xiaokun, Yan, Zongkai, Xiang, Yong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2020
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7382668/
https://www.ncbi.nlm.nih.gov/pubmed/32712882
http://dx.doi.org/10.1186/s11671-020-03378-x
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author Zhu, Yanlin
Wu, Shuai
Pan, Yilan
Zhang, Xiaokun
Yan, Zongkai
Xiang, Yong
author_facet Zhu, Yanlin
Wu, Shuai
Pan, Yilan
Zhang, Xiaokun
Yan, Zongkai
Xiang, Yong
author_sort Zhu, Yanlin
collection PubMed
description The high-resistive grain boundaries are the bottleneck for Li(+) transport in Li(7)La(3)Zr(2)O(12) (LLZO) solid electrolytes. Herein, high-conductive LLZO thin films with cubic phase and amorphous domains between crystalline grains are prepared, via annealing the repetitive LLZO/Li(2)CO(3)/Ga(2)O(3) multi-nanolayers at 600 °C for 2 h. The amorphous domains may provide additional vacant sites for Li(+), and thus relax the accumulation of Li(+) at grain boundaries. The significantly improved ionic conductivity across grain boundaries demonstrates that the high energy barrier for Li(+) migration caused by space charge layer is effectively reduced. Benefiting from the Li(+) transport paths with low energy barriers, the presented LLZO thin film exhibits a cutting-edge value of ionic conductivity as high as 6.36 × 10(−4) S/cm, which is promising for applications in thin film lithium batteries.
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spelling pubmed-73826682020-08-04 Reduced Energy Barrier for Li(+) Transport Across Grain Boundaries with Amorphous Domains in LLZO Thin Films Zhu, Yanlin Wu, Shuai Pan, Yilan Zhang, Xiaokun Yan, Zongkai Xiang, Yong Nanoscale Res Lett Nano Express The high-resistive grain boundaries are the bottleneck for Li(+) transport in Li(7)La(3)Zr(2)O(12) (LLZO) solid electrolytes. Herein, high-conductive LLZO thin films with cubic phase and amorphous domains between crystalline grains are prepared, via annealing the repetitive LLZO/Li(2)CO(3)/Ga(2)O(3) multi-nanolayers at 600 °C for 2 h. The amorphous domains may provide additional vacant sites for Li(+), and thus relax the accumulation of Li(+) at grain boundaries. The significantly improved ionic conductivity across grain boundaries demonstrates that the high energy barrier for Li(+) migration caused by space charge layer is effectively reduced. Benefiting from the Li(+) transport paths with low energy barriers, the presented LLZO thin film exhibits a cutting-edge value of ionic conductivity as high as 6.36 × 10(−4) S/cm, which is promising for applications in thin film lithium batteries. Springer US 2020-07-25 /pmc/articles/PMC7382668/ /pubmed/32712882 http://dx.doi.org/10.1186/s11671-020-03378-x Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Nano Express
Zhu, Yanlin
Wu, Shuai
Pan, Yilan
Zhang, Xiaokun
Yan, Zongkai
Xiang, Yong
Reduced Energy Barrier for Li(+) Transport Across Grain Boundaries with Amorphous Domains in LLZO Thin Films
title Reduced Energy Barrier for Li(+) Transport Across Grain Boundaries with Amorphous Domains in LLZO Thin Films
title_full Reduced Energy Barrier for Li(+) Transport Across Grain Boundaries with Amorphous Domains in LLZO Thin Films
title_fullStr Reduced Energy Barrier for Li(+) Transport Across Grain Boundaries with Amorphous Domains in LLZO Thin Films
title_full_unstemmed Reduced Energy Barrier for Li(+) Transport Across Grain Boundaries with Amorphous Domains in LLZO Thin Films
title_short Reduced Energy Barrier for Li(+) Transport Across Grain Boundaries with Amorphous Domains in LLZO Thin Films
title_sort reduced energy barrier for li(+) transport across grain boundaries with amorphous domains in llzo thin films
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7382668/
https://www.ncbi.nlm.nih.gov/pubmed/32712882
http://dx.doi.org/10.1186/s11671-020-03378-x
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