SKM 2023 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 42: Caloric Effects in Ferromagnetic Materials

MA 42.3: Vortrag

Donnerstag, 30. März 2023, 15:30–15:45, HSZ 04

Designing a light rare-earth-based material system for magnetocaloric hydrogen liquefaction — •Wei Liu¹, Franziska Scheibel¹, Tino Gottschall², Eduard Bykov², Konstantin Skokov¹, and Oliver Gutfleisch¹ — ¹TU Darmstadt — ²Hochfeld- Magnetlabor Dresden, Helmholtz-Zentrum Dresden-Rossendorf, Germany

Hydrogen will play a key role in building a climate-neutral society, where renewables are the major energy sources [1]. Liquid hydrogen is essential for efficient storage and transport of hydrogen, but expensive due to the low efficiency of traditional gas-compression refrigeration [2]. As an emerging and energy-saving technology, magnetocaloric gas liquefaction can be a "game-changer". However, the high criticalities of the heavy rare-earth elements put a question on the usage of the heavy rare-earth-based magnetocaloric materials in industrial scales, although they show large magnetic entropy and adiabatic temperature changes.[3] On the other hand, the relatively high abundances of light rare-earth elements make their alloys appealing for industrial-scale applications. In this work, based on the analysis of mean-field theory, we propose a method of designing a light rare-earth-based magnetocaloric material system with Ce, Pr, and Nd for hydrogen liquefaction.