About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
2026 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-4: Electrochemical Study of CrF3 in Molten NaF-LiF Eutectic |
| Author(s) |
Megan L. Hill, Robert O Hoover, Toni Y Karlsson, David C Horvath |
| On-Site Speaker (Planned) |
Megan L. Hill |
| Abstract Scope |
The pyrochemical reprocessing of molten-fluoride fuel salts is a necessary technology to support the economic viability and advancement of molten salt reactors.1 A major limitation of pyroprocessing within fluoride salts is the lack of a stable, universal reference electrode. In this study, a platinum quasi-reference electrode (Pt QRE) was used within molten NaF-LiF eutectic to electrochemically probe the Cr(III)/Cr(II) and Cr(II)/Cr(0) redox pairs, elucidating diffusion coefficient and exchange electron values. CrF3 was chosen as the analyte because chromium is a common impurity within fluoride salts that arises from the corrosion of structural materials. It was found that a Pt QRE is not an ideal reference electrode for fluoride salt systems due to its instability, as evidenced by the ~ 400 mV peak shift upon introduction of CrF3 to the system. However, it is an adequate QRE, as the diffusion coefficient and exchange electron values yielded in this study were reasonable. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Electrometallurgy, Characterization, Extraction and Processing |