|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Phase Stability, Phase Transformations, and Reactive Phase Formation in Electronic Materials XIX
||Challenges and Solutions for Experimental Investigation of Air and Moisture Sensitive Li Alloys
||Joel Fels, Thomas L. Reichmann, Hans Flandorfer, Hans J. Seifert
|On-Site Speaker (Planned)
The use of metallic anode materials in Li-ion batteries is beneficial due to the higher energy density compared to conventional carbonaceous negative electrodes. However, determining experimental data of metallic anode materials is challenging. Metallic Lithium and its alloys are air and moisture sensitive already at ambient temperatures. At elevated temperatures, side reactions with the crucible and evaporation of the high volatile Li occur. Using the example of the ternary Ga-Li-Sn system, the choice of an appropriate crucible material as well as heating programs for alloy preparation will be presented. Experimental methods, such as thermal analysis to determine phase transition temperatures or structure analysis experiments, require careful prearrangements. Crucible design and experimental details were adapted to the highly reactive alloys. Results from thermal- and crystal structure analysis are then used for phase diagram evaluation.
||Planned: Supplemental Proceedings volume