Fabrication of ball-milled MgO–Mg(OH)2-hydromagnesite composites and evaluation as an air-stable hydrogen storage material

A. Martinez-Garcia; A. K. Navarro-Mtz; E. Reguera; M. Valera-Zaragoza; J. A. Morales-Serna; E. A. Juarez-Arellano

doi:10.1016/j.ijhydene.2020.03.020

Fabrication of ball-milled MgO–Mg(OH)₂-hydromagnesite composites and evaluation as an air-stable hydrogen storage material

A. Martinez-Garcia, A. K. Navarro-Mtz, E. Reguera, M. Valera-Zaragoza, J. A. Morales-Serna, E. A. Juarez-Arellano

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

14 Scopus citations

Abstract

A phase stability map of metallic magnesium powder, exposed to environmental conditions for 12 months (Mg-12M) and subjected to different high-energy ball-milling speeds and milling times, was constructed. Mg-12M−160 [½MgO-⅓Mg(OH)₂-⅙hydromagnesite] and Mg-12M−640 [¼MgO-⅝Mg(OH)₂-⅛hydromagnesite] composites were obtained changing the milling conditions. The correlation among the accumulated energy (ΔE_accum), the impact energy (ΔE_hit), and the phase stability under different high-energy ball-milling conditions were generated. The Mg-12M−160 composite had a hydrogen storage capacity of 0.63 wt% at −196 °C and 8.3 bar, although further hydrogen adsorption at higher pressures is expected. Structural defects play a significant role in the adsorption capacity. A representation of the possible absorption mechanism is proposed.

Original language	English
Pages (from-to)	12949-12960
Number of pages	12
Journal	International Journal of Hydrogen Energy
Volume	45
Issue number	23
DOIs	https://doi.org/10.1016/j.ijhydene.2020.03.020
State	Published - 28 Apr 2020
Externally published	Yes

Keywords

Ball-milling
Composite
Hydrogen adsorption
Mg(OH)
MgO
Structural defects

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10.1016/j.ijhydene.2020.03.020

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title = "Fabrication of ball-milled MgO–Mg(OH)2-hydromagnesite composites and evaluation as an air-stable hydrogen storage material",

abstract = "A phase stability map of metallic magnesium powder, exposed to environmental conditions for 12 months (Mg-12M) and subjected to different high-energy ball-milling speeds and milling times, was constructed. Mg-12M−160 [½MgO-⅓Mg(OH)2-⅙hydromagnesite] and Mg-12M−640 [¼MgO-⅝Mg(OH)2-⅛hydromagnesite] composites were obtained changing the milling conditions. The correlation among the accumulated energy (ΔEaccum), the impact energy (ΔEhit), and the phase stability under different high-energy ball-milling conditions were generated. The Mg-12M−160 composite had a hydrogen storage capacity of 0.63 wt% at −196 °C and 8.3 bar, although further hydrogen adsorption at higher pressures is expected. Structural defects play a significant role in the adsorption capacity. A representation of the possible absorption mechanism is proposed.",

keywords = "Ball-milling, Composite, Hydrogen adsorption, Mg(OH), MgO, Structural defects",

author = "A. Martinez-Garcia and Navarro-Mtz, {A. K.} and E. Reguera and M. Valera-Zaragoza and Morales-Serna, {J. A.} and Juarez-Arellano, {E. A.}",

note = "Publisher Copyright: {\textcopyright} 2020 Hydrogen Energy Publications LLC",

year = "2020",

month = apr,

day = "28",

doi = "10.1016/j.ijhydene.2020.03.020",

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T1 - Fabrication of ball-milled MgO–Mg(OH)2-hydromagnesite composites and evaluation as an air-stable hydrogen storage material

AU - Martinez-Garcia, A.

AU - Navarro-Mtz, A. K.

AU - Reguera, E.

AU - Valera-Zaragoza, M.

AU - Morales-Serna, J. A.

AU - Juarez-Arellano, E. A.

PY - 2020/4/28

Y1 - 2020/4/28

N2 - A phase stability map of metallic magnesium powder, exposed to environmental conditions for 12 months (Mg-12M) and subjected to different high-energy ball-milling speeds and milling times, was constructed. Mg-12M−160 [½MgO-⅓Mg(OH)2-⅙hydromagnesite] and Mg-12M−640 [¼MgO-⅝Mg(OH)2-⅛hydromagnesite] composites were obtained changing the milling conditions. The correlation among the accumulated energy (ΔEaccum), the impact energy (ΔEhit), and the phase stability under different high-energy ball-milling conditions were generated. The Mg-12M−160 composite had a hydrogen storage capacity of 0.63 wt% at −196 °C and 8.3 bar, although further hydrogen adsorption at higher pressures is expected. Structural defects play a significant role in the adsorption capacity. A representation of the possible absorption mechanism is proposed.

AB - A phase stability map of metallic magnesium powder, exposed to environmental conditions for 12 months (Mg-12M) and subjected to different high-energy ball-milling speeds and milling times, was constructed. Mg-12M−160 [½MgO-⅓Mg(OH)2-⅙hydromagnesite] and Mg-12M−640 [¼MgO-⅝Mg(OH)2-⅛hydromagnesite] composites were obtained changing the milling conditions. The correlation among the accumulated energy (ΔEaccum), the impact energy (ΔEhit), and the phase stability under different high-energy ball-milling conditions were generated. The Mg-12M−160 composite had a hydrogen storage capacity of 0.63 wt% at −196 °C and 8.3 bar, although further hydrogen adsorption at higher pressures is expected. Structural defects play a significant role in the adsorption capacity. A representation of the possible absorption mechanism is proposed.

KW - Ball-milling

KW - Composite

KW - Hydrogen adsorption

KW - Mg(OH)

KW - MgO

KW - Structural defects

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U2 - 10.1016/j.ijhydene.2020.03.020

DO - 10.1016/j.ijhydene.2020.03.020

M3 - Artículo

SN - 0360-3199

VL - 45

SP - 12949

EP - 12960

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 23

ER -

Fabrication of ball-milled MgO–Mg(OH)₂-hydromagnesite composites and evaluation as an air-stable hydrogen storage material

Abstract

Keywords

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