About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2026 - In-Situ Characterization Techniques
|
| Presentation Title |
Direct Observation of Catalytic Processes in a Solid Oxide Electrolysis Cell under Operating Conditions via Gas-Cell Transmission Electron Microscopy |
| Author(s) |
Hongkui Zheng, Pritam Chakraborty, Hongyu Sun, Rüdiger Eichel, Hugo Pérez Garza, Shibabrata Basak |
| On-Site Speaker (Planned) |
Hongkui Zheng |
| Abstract Scope |
Solid oxide electrolysis cells (SOECs) produce hydrogen, CO, or syngas using renewable electricity. However, achieving high catalyst activity, selectivity, and stability under operating conditions remains a significant challenge. Directly observing the dynamic changes in catalyst structure and chemistry under realistic reaction environments is therefore critical to better understand catalytic mechanisms and to design more advanced, durable catalysts.
In this work, we focus on Sr2FeMo0.65Ni0.35O6-δ (SFM-Ni), a promising catalyst for CO₂ electrolysis, and examine its morphological and compositional evolution during CO₂-to-CO conversion using gas-cell TEM. Our custom-designed MEMS chips and TEM holder enable stable, high-resolution imaging under controlled atmospheric conditions, heating, and electrical biasing. This setup provides real-time insights into catalyst behavior at the device level, revealing key relationships between structure, chemistry, and performance. These findings will help inform the rational design of more stable and efficient catalysts for future SOEC systems and other high-temperature (co)electrolysis processes. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Nanotechnology, Energy Conversion and Storage |