About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage 2023
|
| Presentation Title |
High Performance Reversible Solid Oxide Fuel Cells (RSOCs) Based on Ruddlesden-Popper Oxygen Electrodes for Grid Scale Energy Storage |
| Author(s) |
Ayesha Akter, Hector Grande, Uday B Pal, Soumendra N Basu, Srikanth Gopalan |
| On-Site Speaker (Planned) |
Srikanth Gopalan |
| Abstract Scope |
Incorporating more renewables into our energy economy is a critical challenge as we transition to a carbon free economy. Reversible solid oxide electrochemical cells (rSOCs) operated as fuel cell power systems and as electrolysis systems, can potentially allow integration of far greater amounts of solar and wind energy into our electricity grid. In this talk, we discuss recent research results on rSOCs based on phase-stabilized rare earth nickelate – rare-earth doped ceria composite oxygen electrodes. Such rSOCs exhibit excellent performance when cycled between solid oxide fuel cell (SOFC) and solid oxide electrochemical cell (SOEC) modes. The degradation in such cells is significantly mitigated by mode-switching operation, compared to operating in single mode operation in electrolysis mode. By comparing distributed relaxation times (DRT) analysis of impedance spectra obtained from single-mode (electrolysis) operated cells, and cells operated reversibly by switching between SOFC and SOEC modes, we obtain insights into cell degradation mechanisms. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, High-Temperature Materials, Other |