| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Seaborg Institutes: Emerging Topics in Actinide Materials and Science
|
| Presentation Title |
Actinide Electrochemistry at Metal Oxide Electrodes |
| Author(s) |
Christopher Dares, Jeffrey McLachlan, Xiangyang Hou, Evan Jones, Gabriela Ortega, Travis Grimes |
| On-Site Speaker (Planned) |
Christopher Dares |
| Abstract Scope |
Precise oxidation state control is imperative to nuclear fuel recycling. Actinides of relevance to nuclear fuel reprocessing (U, Np, Pu, and Am) exist in oxidation states from +6 to +3. In aqueous acidic solutions, the hexa- and pentavalent states they exist as actinyl cations. Most solvent extraction methods developed to separate these elements from fission products rely on differences in bonding properties. The stronger Lewis acids (hexavalent and tetravalent) can thus be separated from the weaker. During extraction, oxidation state stability changes with the change in coordination and solvent environment often resulting in unfavorable oxidation state changes like the generation of a pentavalent species. We herein will present work on the development and use of functionalized metal oxide electrodes and evaluate their electrochemical properties with uranium and other actinides. This includes surface functionalization with ligands to favor high or low oxidation states and the resultant differences in uranium electrochemistry. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Energy Conversion and Storage, |