About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage 2026
|
| Presentation Title |
An Advanced Bilayer Oxygen Electrode for Solid Oxide Steam Electrolyzers: Experimental and Modeling Results |
| Author(s) |
Kevin Huang |
| On-Site Speaker (Planned) |
Kevin Huang |
| Abstract Scope |
High-temperature solid oxide electrolyzers (HTSOEs) offer superior efficiency and hydrogen production rates compared to low-temperature technologies such as alkaline and PEM electrolyzers, making them promising candidates for large-scale hydrogen generation. However, their commercialization is limited by poor operational stability, primarily due to mechanical delamination of the oxygen electrode from the electrolyte. To overcome this, a novel bilayer “core-shell” structured oxygen electrode was developed, offering excellent catalytic activity and thermal/chemical compatibility. Experimental results demonstrate a tenfold improvement in electrode stability at 1 A/cm² and 700°C, along with enhanced power density and hydrogen output. A physics-based “electro-chemo-mechano” model was also established and validated, simulating how lattice oxygen stoichiometry varies with current density. The model links these changes to lattice contraction and interfacial fracture mechanics, enabling prediction of safe operating times based on electrode polarization resistance. This integrated experimental and modeling approach offers a pathway to more durable and efficient HTSOEs. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, High-Temperature Materials, Ceramics |