| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
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| Presentation Title |
SPG-71: Mechanical Behavior of LLZO Solid Electrolytes: In Situ SEM Micropillar Compression and Ab Initio Insights |
| Author(s) |
Zakariya Mohayman, Akihiro Kushima , Tongjun Niu, Nan Li |
| On-Site Speaker (Planned) |
Zakariya Mohayman |
| Abstract Scope |
The garnet-based oxide Li7La3Zr2O12 (LLZO) exhibits significant potential as a solid electrolyte in all-solid-state lithium batteries because of its high lithium ion conductivity and compatibility with a lithium-metal anode. While it is expected to mitigate lithium penetration and cell shorting risks, lithium penetrations in LLZO during battery operation have been reported. Here, a comprehensive understanding of its mechanical behavior is essential for clarifying the root cause of the failure. This study employs in-situ scanning electron microscopy (SEM) tests on LLZO micropillars fabricated by Focused Ion Beam (FIB) to investigate its real-time mechanical behavior under compressive load in nanoscale. Ab initio simulations were also conducted to evaluate the effect of lithium concentration on the mechanical properties of LLZO expected during the charge/discharge processes. The insights obtained provide understanding of the structural integrity and mechanical stability of LLZO during battery operation, contributing to the advancement of the all-solid-state lithium-battery technology.
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| Proceedings Inclusion? |
Undecided |
| Keywords |
Energy Conversion and Storage, Modeling and Simulation, Mechanical Properties |