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

Patrick W. Doheny; Jiasheng Chen; Thomas Gruner; F. Malte Grosche; Paul J. Saines

doi:10.1039/D3TA05358J

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

Patrick W. Doheny,

^a Jiasheng Chen,

^b Thomas Gruner,^bc F. Malte Grosche^b and Paul J. Saines

*^a

Author affiliations

* Corresponding authors

^a School of Chemistry and Forensic Science, University of Kent, Ingram Building, Canterbury, UK
E-mail: P.Saines@kent.ac.uk

^b Cavendish Laboratory, University of Cambridge, Cambridge, UK

^c SLB Cambridge Research, Cambridge, UK

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.

This article is part of the themed collection: Journal of Materials Chemistry A HOT Papers

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Article information

DOI: https://doi.org/10.1039/D3TA05358J
Article type: Paper
Submitted: 04 Sept. 2023
Accepted: 17 Nov. 2023
First published: 17 Nov. 2023
This article is Open Access

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

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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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Journal of Materials Chemistry A