About this Abstract |
Meeting |
TMS Specialty Congress 2025
|
Symposium
|
The 7th International Congress on 3D Materials Science (3DMS 2025)
|
Presentation Title |
Identifying SOFC Triple Phase Boundaries From 3D FIBSEM |
Author(s) |
Alexander S. Hall, Chengge Jiao, Bartłomiej Winiarski, Patrick Barthelemy |
On-Site Speaker (Planned) |
Alexander S. Hall |
Abstract Scope |
Electrochemical reactions at Triple Phase Boudaries (TPB) largely determine the efficiency of Solid Oxide Fuel Cells (SOFC). SOFC microstructure can be viewed in 3D using FIB-SEM. Specifically, the combination of Backscattered Electron (BSE) and Through-the-Lens Detector (TLD) Secondary Electron (SE) images allows easy identification of the three phases in a SOFC electrode sample. By using a plasma ion source, we reconstructed a sample volume roughly ten times larger than prior efforts. Additionally, we used deep learning segmentation of the Pore, YSZ, and Ni phases of the SOFC electrode. With this information, we characterized the volume fraction, two-phase interface densities, and TPBs from a volume large enough to be representative of the sample. Our work represents many technical improvements to SOFC characterization, but also a standardized workflow on which future SOFC characterization efforts can be based. |
Proceedings Inclusion? |
Undecided |