About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage 2025
|
Presentation Title |
Materials Interfacial Stability In Solid Oxide Cells |
Author(s) |
Scott A. Barnett |
On-Site Speaker (Planned) |
Scott A. Barnett |
Abstract Scope |
Solid oxide cell long-term stability is affected by a number of factors, including materials interfacial stability, impurities, and electrode morphological stability. Here the focus is on materials interfacial stability. Some effects, such as reactions between the electrodes and electrolyte (e.g. oxygen-electrode/YSZ reactions) occur at cell firing and/or operating temperature, but do not necessarily result from cell operation. Other effects, such as surface segregation (e.g., Sr segregation on oxygen electrodes), are temperature dependent but can also depend strongly upon cell current/overpotential. Some effects occur only at extremely low or extremely high oxygen partial pressures present during electrolysis operation – these include the destabilization of Ni-YSZ fuel electrodes and fracture at oxygen-electrode/electrolyte interfaces. This talk will review these phenomena and attempt to assess their importance in achieving high performance SOCs with excellent long-term stability. |
Proceedings Inclusion? |
Planned: |
Keywords |
Ceramics, Energy Conversion and Storage, Thin Films and Interfaces |