Nanoparticulate ZrNi: In Situ Disproportionation Effectively Enhances Hydrogen Cycling of MgH2.

Zhang, L; Zhang, X; Zhang, W; Huang, Z; Fang, F; Li, J; Yang, L; Gu, C; Sun, W; Gao, M; Pan, H; Liu, Y

Nanoparticulate ZrNi: In Situ Disproportionation Effectively Enhances Hydrogen Cycling of MgH2.

Zhang, L Zhang, X Zhang, W Huang, Z

Fang, F Li, J Yang, L

Gu, C Sun, W Gao, M Pan, H Liu, Y

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Publisher:: AMER CHEMICAL SOC
Publication Type:: Journal Article
Citation:: ACS Appl Mater Interfaces, 2023, 15, (34), pp. 40558-40568
Issue Date:: 2023-08-30

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Field	Value	Language
dc.contributor.author	Zhang, L
dc.contributor.author	Zhang, X
dc.contributor.author	Zhang, W
dc.contributor.author	Huang, Z https://orcid.org/0000-0003-1985-0884
dc.contributor.author	Fang, F
dc.contributor.author	Li, J
dc.contributor.author	Yang, L https://orcid.org/0000-0003-0123-1540
dc.contributor.author	Gu, C
dc.contributor.author	Sun, W
dc.contributor.author	Gao, M
dc.contributor.author	Pan, H
dc.contributor.author	Liu, Y
dc.date.accessioned	2023-11-09T11:19:24Z
dc.date.available	2023-11-09T11:19:24Z
dc.date.issued	2023-08-30
dc.identifier.citation	ACS Appl Mater Interfaces, 2023, 15, (34), pp. 40558-40568
dc.identifier.issn	1944-8244
dc.identifier.issn	1944-8252
dc.identifier.uri	http://hdl.handle.net/10453/173283
dc.description.abstract	High thermal stability and sluggish absorption/desorption kinetics are still important limitations for using magnesium hydride (MgH2) as a solid-state hydrogen storage medium. One of the most effective solutions in improving hydrogen storage properties of MgH2 is to introduce a suitable catalyst. Herein, a novel nanoparticulate ZrNi with 10-60 nm in size was successfully prepared by co-precipitation followed by a molten-salt reduction process. The 7 wt % nano-ZrNi-catalyzed MgH2 composite desorbs 6.1 wt % hydrogen starting from ∼178 °C after activation, lowered by 99 °C relative to the pristine MgH2 (∼277 °C). The dehydrided sample rapidly absorbs ∼5.5 wt % H2 when operating at 150 °C for 8 min. The remarkably improved hydrogen storage properties are reasonably ascribed to the in situ formation of ZrH2, ZrNi2, and Mg2NiH4 caused by the disproportionation reaction of nano-ZrNi during the first de-/hydrogenation cycle. These catalytic active species are uniformly dispersed in the MgH2 matrix, thus creating a multielement, multiphase, and multivalent environment, which not only largely favors the breaking and rebonding of H-H bonds and the transfer of electrons between H- and Mg2+ but also provides multiple hydrogen diffusion channels. These findings are of particularly scientific importance for the design and preparation of highly active catalysts for hydrogen storage in light-metal hydrides.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	AMER CHEMICAL SOC
dc.relation.ispartof	ACS Appl Mater Interfaces
dc.relation.isbasedon	10.1021/acsami.3c07952
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.rights	This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Appl Mater Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see Nanoparticulate ZrNi: In Situ Disproportionation Effectively Enhances Hydrogen Cycling of MgH2 On Request author Zhenguo Huang, Limei Yang-directed link to Published Work, See https://doi.org/10.1021/acsami.3c07952
dc.subject	03 Chemical Sciences, 09 Engineering
dc.subject.classification	Nanoscience & Nanotechnology
dc.subject.classification	34 Chemical sciences
dc.subject.classification	40 Engineering
dc.subject.classification	51 Physical sciences
dc.title	Nanoparticulate ZrNi: In Situ Disproportionation Effectively Enhances Hydrogen Cycling of MgH2.
dc.type	Journal Article
utslib.citation.volume	15
utslib.location.activity	United States
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	embargoed	*
utslib.copyright.embargo	2024-08-15T00:00:00+1000Z
dc.date.updated	2023-11-09T11:19:11Z
pubs.issue	34
pubs.publication-status	Published
pubs.volume	15
utslib.citation.issue	34

Abstract:

High thermal stability and sluggish absorption/desorption kinetics are still important limitations for using magnesium hydride (MgH2) as a solid-state hydrogen storage medium. One of the most effective solutions in improving hydrogen storage properties of MgH2 is to introduce a suitable catalyst. Herein, a novel nanoparticulate ZrNi with 10-60 nm in size was successfully prepared by co-precipitation followed by a molten-salt reduction process. The 7 wt % nano-ZrNi-catalyzed MgH2 composite desorbs 6.1 wt % hydrogen starting from ∼178 °C after activation, lowered by 99 °C relative to the pristine MgH2 (∼277 °C). The dehydrided sample rapidly absorbs ∼5.5 wt % H2 when operating at 150 °C for 8 min. The remarkably improved hydrogen storage properties are reasonably ascribed to the in situ formation of ZrH2, ZrNi2, and Mg2NiH4 caused by the disproportionation reaction of nano-ZrNi during the first de-/hydrogenation cycle. These catalytic active species are uniformly dispersed in the MgH2 matrix, thus creating a multielement, multiphase, and multivalent environment, which not only largely favors the breaking and rebonding of H-H bonds and the transfer of electrons between H- and Mg2+ but also provides multiple hydrogen diffusion channels. These findings are of particularly scientific importance for the design and preparation of highly active catalysts for hydrogen storage in light-metal hydrides.

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http://hdl.handle.net/10453/173283