About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamentals of Sustainable Metallurgy and Materials Science
|
| Presentation Title |
Temperature-dependent conversion behavior in the hydrogen reduction of lithium sulfate for lithium sulfide production |
| Author(s) |
So-Yeong Lee, Janguk Yu, Beommo Choi, Sangmin Lee, Jungshin Kang |
| On-Site Speaker (Planned) |
So-Yeong Lee |
| Abstract Scope |
The hydrogen (H2) reduction of lithium sulfate (Li2SO4) has attracted attention as a potentially cost-effective route for producing lithium sulfide (Li2S), a key precursor for sulfide solid electrolytes. In this study, the H2 reduction of Li2SO4 was investigated at 1023 – 1123 K using 10 % H2 – Ar gas to elucidate the temperature dependence of the reaction rate. The reaction rate increased with temperature, and the conversion–time curves exhibited distinct temperature dependent shapes. The conversion–time curves were analyzed using an autocatalytic rate equation. The reaction rate was accelerated at 1073 and 1123 K owing to product accumulation, whereas autocatalytic rate acceleration was not evident at 1023 K. In addition, the initial addition of Li2S seeds further increased the reaction rate at 1073 and 1123 K, supporting the autocatalytic behavior. These findings demonstrate the temperature-dependent rate behavior and improve understanding of Li2S formation via the H2 reduction of Li2SO4. |
| Proceedings Inclusion? |
Planned: |