| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
ACerS Robert B. Sosman Award Symposium: Bridging the Gap between Atomistic and Continuum Approaches to Interface Science
|
| Presentation Title |
Stress-Induced Interface Instability in Battery Electrode Materials |
| Author(s) |
Ming Tang |
| On-Site Speaker (Planned) |
Ming Tang |
| Abstract Scope |
Stress-driven morphological instability of interfaces is a phenomenon found in many materials, such as the well-known Asaro-Tiller-Grinfeld instability during epitaxial thin film growth. Large stress often arises within rechargeable battery electrodes during charging/discharging. Its effect on the morphological evolution of moving interfaces between Li-rich and Li-poor phases is an interesting scientific question with significant technological implications. In this talk, I will present some recent studies on this topic for several electrode systems including single-crystalline and polycrystalline intercalation cathode compounds and metallic anodes. We find that stress can destabilize the reaction front via different mechanisms in battery systems, which compromise cycling performance and life and need to be mitigated. |