| Autor: |
Min Guan, Kai Huang, Suwei Mou, Chunzhi Jiang, Yuncong Pang, Andrew Xiang, Jun Song Chen, Yong Xiang, Xiaokun Zhang |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
AIP Advances, Vol 11, Iss 6, Pp 065310-065310-6 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2158-3226 |
| DOI: |
10.1063/5.0047625 |
| Popis: |
Developing a highly Li+-conductive thin-film electrolyte remains a challenge for the application of all-solid-state thin-film batteries. This paper reports an N-doped LiAlO2 glassy thin-film with high ionic conductivities prepared by reactive sputtering under an N2 atmosphere after the pattern of the gold standard LiPON thin-film solid electrolyte. The resulting Li+-conductive thin-film is dense without cracks and shows good adhesion to substrates. The doped N partially substitutes O and yields a triple coordination structure in the thin-films, which leads to an enhancement of ionic conductivity up to 3 orders of magnitude compared to pristine LiAlO2. On one hand, the triply coordinated nitrogen facilitates the formation of a cross-linked network and provides continuous pathways for Li+ transport. On the other hand, the triply coordinated nitrogen could provide additional hopping sites for Li+, which have a relatively weak bonding force to Li+ than O. This gives rise to an N-doped LiAlO2 thin-film with an ionic conductivity of 3.99 × 10−6 S/cm at room temperature. To the best of our knowledge, this is one of the highest ionic conductivities ever reported for LiPON-like thin-film solid electrolytes. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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