| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Functional Nanomaterials 2020: Translating Innovation into Pioneering Technologies
|
| Presentation Title |
Understanding Nanoscale Evolution of Materials and Interfaces in Batteries |
| Author(s) |
Matthew T. McDowell |
| On-Site Speaker (Planned) |
Matthew T. McDowell |
| Abstract Scope |
It is critical to understand how energy storage materials transform and degrade within devices to enable the development of next-generation batteries. In my research group, multi-scale in situ techniques are used to reveal reaction mechanisms and interfacial transformations in nanostructured battery materials. Here, I will present our recent work on understanding and controlling transformations at interfaces between solid-state electrolytes and lithium electrodes within solid-state batteries, where we use interlinked in situ investigations (X-ray tomography and electron microscopy) to investigate how these interfacial transformations control chemo-mechanical degradation. Next, I will discuss investigation of phase transformation pathways in high-capacity battery electrode materials using in situ transmission electron microscopy. In particular, unexpected chemo-mechanical stability is found during reaction of conversion electrodes with alkali ions larger than Li+. This research demonstrates how fundamental understanding of dynamic processes can be used to guide the engineering of new battery materials with improved lifetime. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |