Ionic conductivity and thermal stability of lithium salt / potassium bifluoride electrolytes for thermal batteries
By Yazdani, Aliakbar; Sanghadasa, Mohan; Botte, Gerardine G.
Published in Journal of Power Sources
2020
Abstract
The incorporation of potassium bifluoride (KF–HF) as an additive to the lithium-halide electrolyte for thermal batteries was investigated. Different mixtures of lithium fluoride, lithium chloride and lithium sulfide with KF-HF were studied using electrochemical impedance spectroscopy and differential scanning calorimetry. The results from these tests were combined to obtain a better understanding of the relationship between ionic conductivity, melting point, and electrolyte composition. The results indicated that it is feasible to maintain a relatively high ionic conductivity at temperatures lower (250–300 °C) than current thermal battery electrolytes (400–550 °C). Mixtures of lithium fluoride and potassium bifluoride provided the best ionic conductivity at 260 °C. The effect of mixing these lithium halides on the thermal decomposition of the KF-HF was also investigated. It was observed that it can increase decomposition temperature by up to 15 °C while at the same time reduce the melting point of the mixture and increase the ionic conductivity.
Microsoft is Ending Support for Windows 7
Microsoft will discontinue support for Windows 7 on January 14, 2020 which means Gamry will also be discontinuing support for Windows 7. If you are upgrading to Windows 10, like many companies and institutions, you need to be running Version 7 of our s oftware . Please note that only USB and Ethernet-based instruments can run in Version 7. Eligible users can download the latest version of our software through our online Client Portal .
If you haven't already registered your instrument, you can do so through the Client Portal .
Please email Technical Support if you have any questions regarding this transition. Please be sure to include your instrument model and serial number when contacting us.