| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2025: In-Situ Characterization Techniques
|
| Presentation Title |
Chemo-Mechanical Characterization of V2O5 Single Crystals Via Nanoindentation and In Situ Lithiation |
| Author(s) |
Victor Hugo Balcorta, Rachel Lee, Raj Sanjaykumar Pattel, Samantha Kotze, Arnab Maji, John Ponis, Christopher Walker, Kelvin Xie, George Pharr, Sarbajit Banerjee, Matt Pharr |
| On-Site Speaker (Planned) |
Victor Hugo Balcorta |
| Abstract Scope |
Certain single-crystal materials show promise as next-generation lithium-ion battery cathodes due to their high energy density and stability. This study aims to provide such understanding in V2O5 single crystals of different phases (alpha and zeta) by probing chemo-mechanical interactions during lithiation/delithiation.
Specifically, this study first characterized nano-scale mechanical properties of these single crystals, including hardness, elastic modulus, and fracture toughness, using Berkovich nanoindentation and micro-pillar compression. Additionally, scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and focused ion beam (FIB) sectioning were implemented to capture details of crystal reorientation, texture evolution, and stress-induced lattice rotation associated with the nanoindentation process. This study also explored the impact of plastic deformation (accomplished via nanoindentation) on chemical lithiation/delithiation of the V2O5 single crystals through in-situ optical microscopy and RAMAN spectroscopy. Finally, SEM, FIB, and EBSD were utilized to analyze the interactions between lithiation-induced effects and the defects and plastic zones. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Energy Conversion and Storage, Characterization |