| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Temperature Electrochemistry: An FMD Symposium Honoring Uday B. Pal
|
| Presentation Title |
Production of Pure Aluminum and Oxygen by Solid Oxide Membrane-based Electrolysis Using an Inert Anode |
| Author(s) |
Shizhao Su, Uday Pal, Xiaofei Guan |
| On-Site Speaker (Planned) |
Shizhao Su |
| Abstract Scope |
High purity aluminum metal was produced with oxygen as a byproduct using solid oxide membrane-based (SOM) electrolysis process. An inert anode assembly was immersed in an alumina containing molten fluoride flux. The assembly consists of a LSM (La0.8Sr0.2MnO3-δ)-Inconel inert anode current collector inserted in liquid silver anode and enclosed in a one-end-closed oxygen-ion-conducting YSZ (yttria-stabilized zirconia) membrane tube. The molten flux electrolyte is engineered to optimize the electrochemical performance of the cell and chemical compatibility with other cell components. During electrolysis, molten aluminum was produced at the cathode which was either TiB2 or molten aluminum. The high purity of the aluminum product was confirmed using microscopy and spectroscopy characterization methods. An electrochemical polarization model was developed to identify all the contributors to efficiency losses. The strategies to improve cell design based on the polarization model will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Electrometallurgy, High-Temperature Materials |