Hydrogen sorption and rehydrogenation properties of NaMgH3

Luis Contreras; Margarita Mayacela; Alberto Bustillos; Leonardo Rentería; David Book

doi:10.3390/met12020205

Hydrogen sorption and rehydrogenation properties of NaMgH₃

Luis Contreras^*, Margarita Mayacela, Alberto Bustillos, Leonardo Rentería, David Book

^*Corresponding author for this work

Metallurgy and Materials

Research output: Contribution to journal › Article › peer-review

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Abstract

The formation and hydrogen sorption properties of the NaMgH₃ perovskite/type hydride have been examined. Samples were mechanically ball milled under argon for 2, 5 and 15 h; then characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA) coupled with a mass spectrometer (MS). Lattice parameters and cell volume of the main NaMgH₃ phase increase as a function of milling. Dehydrogenation proceeded in two-step reactions for the NaMgH₃. The maximum amount of released hydrogen was achieved for the 2 h milled NaMgH₃ hydride accounting for 5.8 wt.% of H₂ from 287^◦ C to 408^◦ C. Decomposed NaMgH₃ samples were reversibly hydrogenated under 10 bar H₂ at ~200^◦ C.

Original language	English
Article number	205
Number of pages	12
Journal	Metals
Volume	12
Issue number	2
DOIs	https://doi.org/10.3390/met12020205
Publication status	Published - 22 Jan 2022

Bibliographical note

Funding Information:
Funding: This research was funded by Technical University of Ambato, Research and Development Directorate, Research Project ID PFICM23 “Análisis de la capacidad de generación de Hidrógeno como energía no contaminante mediante fuentes de energía renovables fotovoltaica y eólica”.

Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

Dehydrogenation
Hydrogen storage
Mechanical milling
Perovskite hydrides
Rehydrogenation

ASJC Scopus subject areas

General Materials Science
Metals and Alloys

Access to Document

10.3390/met12020205Licence: Creative Commons: Attribution (CC BY)

ContrerasL2022Hydrogen Final published version, 4.68 MBLicence: Creative Commons: Attribution (CC BY)

Cite this

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abstract = "The formation and hydrogen sorption properties of the NaMgH3 perovskite/type hydride have been examined. Samples were mechanically ball milled under argon for 2, 5 and 15 h; then characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA) coupled with a mass spectrometer (MS). Lattice parameters and cell volume of the main NaMgH3 phase increase as a function of milling. Dehydrogenation proceeded in two-step reactions for the NaMgH3. The maximum amount of released hydrogen was achieved for the 2 h milled NaMgH3 hydride accounting for 5.8 wt.% of H2 from 287◦ C to 408◦ C. Decomposed NaMgH3 samples were reversibly hydrogenated under 10 bar H2 at ~200◦ C.",

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author = "Luis Contreras and Margarita Mayacela and Alberto Bustillos and Leonardo Renter{\'i}a and David Book",

note = "Funding Information: Funding: This research was funded by Technical University of Ambato, Research and Development Directorate, Research Project ID PFICM23 “An{\'a}lisis de la capacidad de generaci{\'o}n de Hidr{\'o}geno como energ{\'i}a no contaminante mediante fuentes de energ{\'i}a renovables fotovoltaica y e{\'o}lica”. Publisher Copyright: {\textcopyright} 2022 by the authors. Licensee MDPI, Basel, Switzerland.",

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AU - Bustillos, Alberto

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AU - Book, David

N1 - Funding Information: Funding: This research was funded by Technical University of Ambato, Research and Development Directorate, Research Project ID PFICM23 “Análisis de la capacidad de generación de Hidrógeno como energía no contaminante mediante fuentes de energía renovables fotovoltaica y eólica”. Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

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N2 - The formation and hydrogen sorption properties of the NaMgH3 perovskite/type hydride have been examined. Samples were mechanically ball milled under argon for 2, 5 and 15 h; then characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA) coupled with a mass spectrometer (MS). Lattice parameters and cell volume of the main NaMgH3 phase increase as a function of milling. Dehydrogenation proceeded in two-step reactions for the NaMgH3. The maximum amount of released hydrogen was achieved for the 2 h milled NaMgH3 hydride accounting for 5.8 wt.% of H2 from 287◦ C to 408◦ C. Decomposed NaMgH3 samples were reversibly hydrogenated under 10 bar H2 at ~200◦ C.

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