|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||High Temperature Electrochemistry III
||Thermochemical Properties of Barium-Bismuth Alloys Determined by Emf Measurements
||Timothy Lichtenstein, Nathan Smith, Hojong Kim
|On-Site Speaker (Planned)
We present on the thermochemical properties of barium-bismuth alloys determined by emf measurements at temperatures between 450oC and 800oC using binary CaF2-BaF2 (97-3 mol%) electrolyte. Liquid bismuth electrodes exhibit unique electrochemical properties compared to conventional solid-state electrodes due to strong chemical interactions with alkali/alkaline-earth elements in the liquid state. These liquid metal electrodes have been demonstrated to change the deposition potentials of alkali/alkaline-earth elements, to have a high coulombic efficiencies (>98%), and to selectively deposit alkali/alkaline-earth metals. With alkali/alkaline-earth elements making up a substantial portion of the heat density of nuclear waste, we are looking at using liquid metals to separate barium, strontium and cesium out of chloride salts used to process spent nuclear fuels. In order to understand the unique deposition behavior of these alkali/alkaline-earth elements into liquid bismuth, it is necessary to determine the thermochemical properties of these alloys.
||Planned: Supplemental Proceedings volume