About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage 2023
|
Presentation Title |
Towards Fracture-free Bulk Silicon Anodes for Lithium-ion Batteries |
Author(s) |
Matthew Lefler, Junhoon Yeom, Christopher Rudolf, Corey T. Love |
On-Site Speaker (Planned) |
Corey T. Love |
Abstract Scope |
The large lithium capacity and subsequent volumetric expansion and mechanical fracture of silicon with lithium have been documented extensively and strategies to overcome such as nano and composite routes provide a means to produce Si-containing graphite anodes. We demonstrate the art of the possible to incorporate carbon-free bulk silicon as anode material in lithium-based batteries. We explore lithium alloying/dealloying with bulk silicon at elevated temperature, near the ductile-to-brittle transition temperature, as a means to promote reversible lithium storage without mechanical fracture. We utilize a suite of physical and mechanical characterization technique to better understand the interplay between elevated temperature operation and micro-scale morphologies of silicon for use as battery anodes. Finally, X-ray computed tomography and image analysis tools are used to quantify the extent of fracture within bulk silicon after multiple alloy/dealloy processed with lithium. |
Proceedings Inclusion? |
Planned: |
Keywords |
Energy Conversion and Storage, Mechanical Properties, |