| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Powder and Ceramic Materials Science
|
| Presentation Title |
Elucidating the Influence of the Thermodynamics, Kinetics, and Chemistries of Molten Salts to Synthesize Ceramics for Energy Applications |
| Author(s) |
Benjamin Levitas, Katsuyoshi Kakinuma, Srikanth Gopalan |
| On-Site Speaker (Planned) |
Benjamin Levitas |
| Abstract Scope |
The molten salt synthesis (MSS) of ceramic materials drastically increases the reaction kinetics compared to the significant energy and time intensive high temperature calcination method. However, studies utilizing the MSS fail to address a critical aspect of this method: the chemistry inherent to each molten salt system. In this work, we investigate the synthesis of La0.8Sr0.2MnO3 (LSM) in LiCl-KCl eutectic and KNO3 molten salts. The high acidity of Li+ establishes a thermodynamic barrier that impedes Sr nucleation and thus does not favor LSM formation in LiCl-KCl eutectic. Bearing this result in mind, we performed a single-step KNO3 MSS of core-shell La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) – La0.8Sr0.2MnO3 (LSM) powders for solid oxide fuel cell cathodes in times as short as 10 minutes. The results presented further elucidate the influence of salt chemistry in the MSS, and demonstrate an expeditious method to synthesize highly relevant single phase and core-shell ceramic materials for energy applications. |
| Proceedings Inclusion? |
Planned: |