| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
|
| Presentation Title |
Fatigue of Solid State Electrolytes for Lithium Ion Batteries |
| Author(s) |
David Armstrong, Johann Perera |
| On-Site Speaker (Planned) |
David Armstrong |
| Abstract Scope |
Solid state lithium ion batteries (SSLIBs) have the potential to revolutionise personal electric transport, with higher range through improved energy density and increased safety through removal of flammable liquid electrolytes. However they have never been deployed at scale, with a major issue being their poor lifetime due to mechanical failure of the electrolytes. Whilst much of the characterisation of these has focused on basic strength and modulus measurements it is clear that fatigue life will be key in increasing the lifetime of the systems. In this work we use micro cantilevers produced using FIB and tested using nanoindentation to produce SN curves in two leading solid electrolytes, LLZO and Li6PS5Cl. We show that the fatigue life time in LLZO is an order of magnitude better than Li6PS5Cl which despite showing good static properties shows limited slow cycle fatigue resistance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Energy Conversion and Storage, Characterization |