Application of Auger electron spectroscopy in lithium-ion conducting oxide solid electrolytes

Garnet-type oxide solid electrolytes are the critical materials for all-solid-state lithium ion batteries. Nanoscale spectroscopic analysis on solid electrolytes plays a key role in bridging the gap between microstructure and properties. In this work, Auger electron spectroscopy (AES), which can dir...

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Bibliographic Details
Published in:Nano research 2023-03, Vol.16 (3), p.4039-4048
Main Authors: Zhang, Yue, Zhai, Wenbo, Hu, Xiangchen, Jiang, Yilan, Chen, Shaojie, Zhang, Yining, Liu, Wei, Yu, Yi
Format: Article
Language:English
Subjects:
Atomic/Molecular Structure and Spectra
Auger spectroscopy
Batteries
Biomedicine
Biotechnology
Chemistry and Materials Science
Condensed Matter Physics
Electrolytes
Electron spectroscopy
Garnets
Ion beams
Ions
Lithium
Lithium-ion batteries
Materials Science
Molten salt electrolytes
Nanotechnology
Rechargeable batteries
Research Article
Scanning electron microscopy
Solid electrolytes
Spectroscopy
Spectrum analysis
Transmission electron microscopy
Valence
Women’s special issue in nanomaterials
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Summary:Garnet-type oxide solid electrolytes are the critical materials for all-solid-state lithium ion batteries. Nanoscale spectroscopic analysis on solid electrolytes plays a key role in bridging the gap between microstructure and properties. In this work, Auger electron spectroscopy (AES), which can directly detect lithium element and distinguish its valence state, was applied to characterize the garnet-type Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO). Different spectroscopy parameters were evaluated and optimal acquisition conditions were provided. Electron induced precipitation of lithium metal from LLZTO was observed. By exploring the influence factors of precipitation and combining transmission electron microscopy (TEM) and focused ion beam (FIB) experiments, the underlying mechanism of the phenomenon was revealed and previous controversy was resolved. The analysis method was also extended to other types of solid electrolytes, and this work provides a reference for future in-depth research on the structure–property relationship of solid electrolytes using AES.
ISSN:1998-0124
1998-0000
DOI:10.1007/s12274-022-4431-2