| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
H-19: Molten Salt Electrolysis of Alkaline-earth Elements Using Liquid Metal and Alloy Electrodes |
| Author(s) |
Thomas P. Nigl, Timothy Lichtenstein, Yuran Kong, Hojong Kim |
| On-Site Speaker (Planned) |
Thomas P. Nigl |
| Abstract Scope |
Electrochemical separation of Sr2+ and Ba2+ ions from molten salt electrolytes (LiCl-KCl-SrCl2 and LiCl-KCl-BaCl2) into pure liquid metal electrodes (Bi, Sb, Sn, Pb) at 500–650°C was achieved due to strong chemical interactions between alkaline-earth metals and liquid metals. The liquid metal electrodes were cathodically discharged up to 200 C g-1 at a constant current density of 50 mA cm-2 in eutectic LiCl-KCl with the addition of either 5 mol% SrCl2 or BaCl2. Complex electrode reactions during separation resulted in co-deposition of Sr, Ba, and Li. To reduce the quantity of Li and increase the quantity of Sr/Ba removed from the electrolyte, Bi-Sb alloys were investigated as liquid metal alloy electrodes and cathodically discharged up to 200 C g-1 at 500°C. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |