Enhancement of the Hydrogen-Storage Characteristics of Mg by Adding Mg2Ni and Ni to MgH2 via High Energy Ball Milling in Hydrogen Atmosphere

TiCl3 was chosen as an additive to increase hydriding and dehydriding rates of Mg. In our previous works, we found that the optimum percentage of additives that improved the hydriding and dehydriding features of Mg was approximately ten. Specimens consisting of 90 wt% Mg and 10 wt% TiCl3 (named Mg–10TiCl3) were prepared by high-energy ball milling in hydrogen. The specimens’ hydriding and dehydriding properties were then studied. Mg–10TiCl3 had an effective hydrogenstorage capacity (the quantity of hydrogen absorbed in 60 min) of approximately 7.2 wt% at 593 K under 12 bar H2 at the second cycle. After high-energy ball milling in hydrogen, Mg–10TiCl3 contained Mg, β-MgH2, and small amounts of γ-MgH2 and TiH1.924. TiH1.924 remained undercomposed even after dehydriding at 623 K in a vacuum for 2 h. The hydriding and dehydriding properties of Mg–10TiCl3 were compared with those of other specimens such as Mg–10Fe2O3, Mg–10NbF5, and Mg–5Fe2O3–5Ni, for which the hydrogen-storage properties were previously reported.

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High energy ball-milling preparation of Co–B amorphous alloy with high electrochemical hydrogen storage ability

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2012.06.008 ◽

2012 ◽

Vol 539 ◽

pp. 90-96 ◽

Cited By ~ 19

Author(s):

Peng Gao ◽

Shaoqiang Yang ◽

Zhu Xue ◽

Guangbo Liu ◽

Guoli Zhang ◽

...

Keyword(s):

Amorphous Alloy ◽

Hydrogen Storage ◽

Ball Milling ◽

High Energy ◽

High Energy Ball Milling ◽

Electrochemical Hydrogen Storage ◽

Energy Ball ◽

Storage Ability

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The preparation of Co9S8 and CoS2 nanoparticles by a high energy ball-milling method and their electrochemical hydrogen storage properties

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2014.04.061 ◽

2014 ◽

Vol 39 (17) ◽

pp. 9300-9306 ◽

Cited By ~ 27

Author(s):

Wei Qin ◽

Baoguo Hu ◽

Di Bao ◽

Peng Gao

Keyword(s):

Hydrogen Storage ◽

Ball Milling ◽

High Energy ◽

High Energy Ball Milling ◽

Hydrogen Storage Properties ◽

Electrochemical Hydrogen Storage ◽

Milling Method ◽

Energy Ball ◽

Storage Properties

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06/00546 Modification of carbon nanostructures by high energy ball-milling under argon and hydrogen atmosphere

Fuel and Energy Abstracts ◽

10.1016/s0140-6701(06)80548-5 ◽

2006 ◽

Vol 47 (2) ◽

pp. 85-86

Keyword(s):

Ball Milling ◽

Carbon Nanostructures ◽

High Energy ◽

Hydrogen Atmosphere ◽

High Energy Ball Milling ◽

Energy Ball

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Magnesium Hydride of Orthorhombic Crystal from High-Energy Ball Milling under Hydrogen Atmosphere

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.724-725.1033 ◽

2013 ◽

Vol 724-725 ◽

pp. 1033-1036 ◽

Cited By ~ 1

Author(s):

Shi Xue Zhou ◽

Wei Xian Ran ◽

Min Jian Yang ◽

De Xi Wang ◽

Guo Qiang Chen ◽

...

Keyword(s):

Crystal Structure ◽

Ball Milling ◽

High Energy ◽

Hydrogen Atmosphere ◽

Magnesium Hydride ◽

High Energy Ball Milling ◽

Orthorhombic Crystal ◽

Orthorhombic Crystal Structure ◽

Anthracite Coal ◽

Energy Ball

The crystal structure of magnesium hydride affects the properties of magnesium for hydrogen storage. The crystal phase and dehydriding temperature of magnesium hydride from magnesium by high-energy ball milling under hydrogen atmosphere with anthracite carbon, which was prepared from anthracite coal by demineralization and carbonization, as milling aid was investigated. The HRTEM observation and XRD characterization showed that the Mg hydrided into nanocrystalline β-MgH2of tetrahedral crystal structure and γ-MgH2of orthorhombic crystal structure during milling under 1 MPa of hydrogen, and the γ-MgH2increased with the extension of milling time. The DSC analysis showed that the endothermic peak of γ-MgH2was 53 °C lower than that of β-MgH2in the material from 10 h of milling.

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