About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage VII
|
Presentation Title |
Thermal Implications of Diverging Degradation Modes in Battery Electrodes and Opportunities to Enable Anode-free Systems |
Author(s) |
Corey T. Love, Rachel Carter, Robert Atkinson, Todd Kingston |
On-Site Speaker (Planned) |
Corey T. Love |
Abstract Scope |
Thermal gradients can develop inside lithium-ion battery packs even with the application of active or passive cooling strategies. What's more, interelectrode gradients can develop during charge and discharge operation as asymmetric heat conduction pathways exist in the radial and axial directions in cylindrical cells. We have shown how interelectrode thermal gradients can affect the local electrochemistry in graphite and lithium metal anodes. This talk will discuss how thermal-mechanical failure occurs in battery cells exposed to thermal gradients and transients. Subtle temperature differences between electrodes can induce degradation modes which are directionally-dependent, based upon which electrode is warmer or cooler. We use this understanding to explain how degradation processes can occur in commercial cells and offer informed operational strategies and remediation techniques to reverse the these degradation effects. The opportunity to enable anode-free systems through thermal manipulation will also be presented. |
Proceedings Inclusion? |
Planned: |