Lithium sensors based on Li6La3Ta1.5Y0.5O12 and Li6BaLa2Ta2O12 garnet electrolytes for molten lead alloys
| Autor: | Sergi Colominas, Òscar Ferrer, Marc Nel-lo, Jordi Abella |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Potentiometric titration chemistry.chemical_element Thermodynamics 02 engineering and technology Electrolyte 010402 general chemistry Electrochemistry 01 natural sciences symbols.namesake Materials Chemistry Fast ion conductor Nernst equation Electrical and Electronic Engineering Instrumentation Eutectic system Open-circuit voltage Metals and Alloys 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry symbols Lithium 0210 nano-technology |
| Zdroj: | Sensors and Actuators B: Chemical. 339:129831 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/j.snb.2021.129831 |
| Popis: | The development of effective breeding blankets is crucial to the success of future fusion reactors. One of the main liquid breeding candidates is molten eutectic Pb-Li. In this environment, it is essential to control lithium concentration and dosage to keep the adequate composition in the melt. In this frame, on-line and on-board lithium monitoring tools, which can operate under extreme conditions, are required. Electrochemical sensors based on lithium conducting solid electrolytes (Li6La3Ta1.5Y0.5O12 and Li6BaLa2Ta2O12) were designed and tested. These potentiometric sensors were used to measure the Open Circuit Potential (OCP) in molten lead-lithium alloys with different lithium concentrations. Measurements were performed at 400 °C, 500 °C, and 600 °C. Experimental OCP values were in good agreement with those calculated with the Nernst equation. OCP values showed a linear relationship versus the logarithm of the lithium activities, fulfilling the Nernst equation. |
| Databáze: | OpenAIRE |
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