About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage 2026
|
| Presentation Title |
Quantifying location dependent loss of Ni percolation in solid oxide cells operated in SOEC and RSOC modes |
| Author(s) |
Emily Ghosh, John-In Lee, Uday Pal, Srikanth Gopalan, Soumendra Basu |
| On-Site Speaker (Planned) |
Soumendra Basu |
| Abstract Scope |
Solid oxide cells with nickelate-based oxygen electrodes and Ni/YSZ fuel electrodes have been subjected to long term operation in the electrolyzer (SOEC) mode, as well in reversible (RSOC) mode. The loss of Ni percolation has been quantified in both the active and the support layer of the fuel electrode using low voltage scanning electron microscopy. Additionally, the effect of chemical and electrochemical degradation has been separated by examining the electrochemically active and electrochemically inactive regions of the fuel electrodes. Grain coarsening of the Ni phase in these regions has been quantified using a novel SEM imaging technique that can separate percolated and unpercolated Ni, YSZ, and pore phases in a single SEM image. The microstructural changes are correlated to the changes in the electrochemical performance of these cells. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Characterization, Environmental Effects |