Issue 48, 2023

Dy(OH)3: a paramagnetic magnetocaloric material for hydrogen liquefaction

Abstract

The magnetic properties of a series of Ln(OH)3 (where Ln = Gd–Er) coordination polymer materials have been examined to evaluate their potential as magnetocaloric materials. Dy(OH)3 was found to exhibit an impressive magnetic entropy change of 33.4 J kg−1 K−1 at 12 K for a magnetic field change of 5-0 T, based on magnetisation measurements. Further magnetic heat capacity analysis indicated a maximum adiabatic temperature change of 8.4 K at 22.7 K. The favourable magnetocaloric parameters obtained for Dy(OH)3 demonstrated its effectiveness to act as a magnetic cooling material for hydrogen liquefaction, since the boiling point of hydrogen aligns well with the temperature for peak magnetocaloric performance of Dy(OH)3 for high field changes.

Graphical abstract: Dy(OH)3: a paramagnetic magnetocaloric material for hydrogen liquefaction

Supplementary files

Article information

Article type
Paper
Submitted
04 Sept. 2023
Accepted
17 Nov. 2023
First published
17 Nov. 2023
This article is Open Access
Creative Commons BY license

J. Mater. Chem. A, 2023,11, 26474-26480

Dy(OH)3: a paramagnetic magnetocaloric material for hydrogen liquefaction

P. W. Doheny, J. Chen, T. Gruner, F. M. Grosche and P. J. Saines, J. Mater. Chem. A, 2023, 11, 26474 DOI: 10.1039/D3TA05358J

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