Reduced Energy Barrier for Li+ Transport Across Grain Boundaries with Amorphous Domains in LLZO Thin Films
Abstract The high-resistive grain boundaries are the bottleneck for Li+ transport in Li7La3Zr2O12 (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/Li2CO3/Ga2O3 multi-na...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-07-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s11671-020-03378-x |
| _version_ | 1797724531563954176 |
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| author | Yanlin Zhu Shuai Wu Yilan Pan Xiaokun Zhang Zongkai Yan Yong Xiang |
| author_facet | Yanlin Zhu Shuai Wu Yilan Pan Xiaokun Zhang Zongkai Yan Yong Xiang |
| author_sort | Yanlin Zhu |
| collection | DOAJ |
| description | Abstract The high-resistive grain boundaries are the bottleneck for Li+ transport in Li7La3Zr2O12 (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/Li2CO3/Ga2O3 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. |
| first_indexed | 2024-03-12T10:18:27Z |
| format | Article |
| id | doaj.art-2bbd0bc71f69424da0d917ebe90dacf6 |
| institution | Directory Open Access Journal |
| issn | 1556-276X |
| language | English |
| last_indexed | 2024-03-12T10:18:27Z |
| publishDate | 2020-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-2bbd0bc71f69424da0d917ebe90dacf62023-09-02T10:15:59ZengSpringerOpenNanoscale Research Letters1556-276X2020-07-011511810.1186/s11671-020-03378-xReduced Energy Barrier for Li+ Transport Across Grain Boundaries with Amorphous Domains in LLZO Thin FilmsYanlin Zhu0Shuai Wu1Yilan Pan2Xiaokun Zhang3Zongkai Yan4Yong Xiang5School of Materials and Energy, University of Electronic Science and Technology of ChinaSchool of Materials and Energy, University of Electronic Science and Technology of ChinaSchool of Materials and Energy, University of Electronic Science and Technology of ChinaSchool of Materials and Energy, University of Electronic Science and Technology of ChinaSchool of Materials and Energy, University of Electronic Science and Technology of ChinaSchool of Materials and Energy, University of Electronic Science and Technology of ChinaAbstract The high-resistive grain boundaries are the bottleneck for Li+ transport in Li7La3Zr2O12 (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/Li2CO3/Ga2O3 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.http://link.springer.com/article/10.1186/s11671-020-03378-xSolid electrolytesLLZOThin filmEnergy barrierIonic conductivity |
| spellingShingle | Yanlin Zhu Shuai Wu Yilan Pan Xiaokun Zhang Zongkai Yan Yong Xiang Reduced Energy Barrier for Li+ Transport Across Grain Boundaries with Amorphous Domains in LLZO Thin Films Nanoscale Research Letters Solid electrolytes LLZO Thin film Energy barrier Ionic conductivity |
| 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 | Solid electrolytes LLZO Thin film Energy barrier Ionic conductivity |
| url | http://link.springer.com/article/10.1186/s11671-020-03378-x |
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