| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Temperature Electrochemistry: An FMD Symposium Honoring Uday B. Pal
|
| Presentation Title |
Dynamic Operation of Metal-supported Solid Oxide Electrolysis Cells |
| Author(s) |
Zhikuan Zhu, BoXun HU, Michael C. Tucker |
| On-Site Speaker (Planned) |
Zhikuan Zhu |
| Abstract Scope |
Symmetric-structure metal-supported solid oxide fuel cells and electrolysis cells (MS-SOFCs, MS-SOECs) offer several advantages over anode-supported cells, including the use of inexpensive materials, high mechanical strength, and rapid ramp-up ability.We extend dynamic operation to MS-SOCs in SOEC mode, including: thermal cycling, redox cycling, voltage cycling, and steam cycling. For thermal cycling, the temperature was rapidly varied between 160 °C and 700 °C for 50 cycles. Redox cycling involved switching the steam side gas between 50% humidified H2 and air or 50% humidified N2 steam each for 10 cycles. Voltage cycling was performed by operating the cell under variable voltage between 1.3V and 2.8V. Steam cycling entailed rapidly switching between 20% and 50% steam:hydrogen ratio. Degradation rates for each testing strategy were compared to a baseline cell, and found to be similar. The excellent tolerance to dynamic operation increases confidence that MS-SOECs will be compatible with dynamic or intermittent renewable resources. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Iron and Steel, Ceramics |