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ball milling hydrogen storage in Mexico
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Hydrogen absorption of TiFe alloy synthesized by ball milling …
The ball-to-sample ratio in weight was 40:1. The diameter of each ball was 12.1 mm. MA was carried out for maximum 40 h at a speed of 710 rpm and the MA system was water-cooled by high-power ball-milling apparatus (NEV-MA8, Nissin-Giken, Japan).The samples prepared by ball-milling were removed from the pot in a glove box …
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Kinetic properties of La2Mg17–x wt.% Ni (x = 0–200) hydrogen storage …
The as-cast La 2 Mg 17 with different amount of Ni powders were mixed through ball milling to produce a new type of La 2 Mg 17 –x wt.% Ni (x = 50, 100, 150, 200) alloy. The microstructures of the alloys were characterized by XRD technique, the results show that the crystal structure transfers to amorphous one with the increasing amount of …
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Hydrogen storage property improvement of La–Y–Mg–Ni alloy by ball
Ball milling the powders of Mg-based alloys with transition metal compounds is effective for improving their hydrogen storage performances. In this experiment, the alloys of La 1.7 Y 0.3 Mg 16 Ni + x wt.% TiF 3 (x = 0–10) were prepared through mechanical milling technology. XRD, SEM, HRTEM and granulometry were used to …
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Deposition of polymer coating on metallic powder through ball milling …
Ball milling technique was used for deposition of the polytetrafluoroethylene (PTFE) coating on the powder of TiFe intermetallic compound. Measurement of pressure–composition hydrogen absorption isotherms revealed that the polymer-coated TiFe intermetallic compound kept its hydrogen storage ability.
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Hydrogen storage materials discovery via high throughput ball milling …
The lack of a high capacity hydrogen storage material is a major barrier to the implementation of the hydrogen economy. To accelerate discovery of such materials, we have developed a high-throughput workflow for screening of hydrogen storage materials in which candidate materials are synthesized and characterized via highly …
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[Retracted] Preparation of Mg2Ni Hydrogen Storage Alloy …
In this paper, Mg 2 Ni hydrogen storage alloy powder was prepared by high-energy ball milling mechanical alloying method, and the influence of stirring shaft rotation speed, ball milling time, and different sizes of ball mills on the formation time, powder morphology, and crystal structure of Mg 2 Ni alloy during ball milling was studied. The …
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Microstructure and kinetics/thermodynamics of …
1. Introduction. Hydrogen is an energy carrier that is both clean and effective. It is possible to manufacture it using primary energy sources such as fossil fuels, nuclear power, renewable resources, and others (BOULET and GEWARD, 1983, IP, 2009, JAIN et al., 2009, SCHLAPBACH et al., 1979).With the development of materials science, high …
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Improved hydrogen storage performances of nanocrystalline …
In this work, Sm 5 Mg 41 fabricated by vacuum induction melting was milled to greatly improve the hydrogen storage performances. The alloy has higher surface activity and better hydrogen absorption and desorption properties due to the abundant of crystal defects causing by ball milling.
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High energy ball milling composite modification of Mg2Ni …
This study focuses on the preparation of a Mg 2 Ni hydrogen storage alloy through high-energy ball milling, further enhanced by composite graphene and multi …
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Oxygen vacancy in magnesium/cerium composite from ball milling …
Section snippets Preparation of Mg-based hydrogen storage materials. The Mg used has a purity of >99.9 wt% and a particle size of <74 μm (Tianjin Ruijinte Chemical Company, China) and CeO 2 has a purity of 99.9 wt% and a particle size of <100 nm (Tianjin Guangfu Fine Chemical Research Institute, China). The hydrogen used has …
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Structural and electrochemical properties of TiFe alloys
synthesized by ball milling for hydrogen storage B. Hosni1,2,3 & N. Fenineche1 & O. ElKedim3 & C. Khaldi2 & J. Lamloumi2 Received: 2 May 2017/Revised: 26 July 2017/Accepted: 28 July 2017/Published online: 6 August 2017 ... promising hydrogen storage alloys due to its excellent cyclability, relatively high hydrogenation capacity, low …
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(PDF) Ball Milling Innovations Advance Mg-Based Hydrogen …
Ball milling has emerged as a versatile and effective technique to synthesize and modify nanostructured Mg-based hydrides with enhanced hydrogen …
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Hydriding behavior of magnesium-based hydrogen storage …
By measuring hydrogen-storage capacity and hydrogen absorption kinetics of the material, hydriding behaviors of LaMg 11 Ni prepared by different mechanical ball-milling time were compared. In this work, there is a 20% increase of hydrogen absorption capacity after 20 h milling, and the kinetics of hydrogen …
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Using Ball Milling for Modification of the …
It is concluded that ball milling can significantly improve the kinetic and electrochemical properties of magnesium-based hydrogen storage materials and increase the hydrogen storage...
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A review on metal hydride materials for hydrogen storage
These particle sizes can be achieved by using methods such as high-energy ball milling, chemical deposition or plasma ball milling [66]. During repeated hydrogen ab−/desorption cycling, depending on temperature and pressure, the nanoparticles agglomerate, which is followed by the degradation of the storage properties.
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Microstructure and Hydrogen Storage Performance of …
Abstract: A high-energy ball-milling method was applied for different milling times (1 h, 3 h, and 10 h) to synthetize nanocrystalline MgH 2 powder samples catalyzed by Fe 2 Ti. Morphology and mi-
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Fast Hydrogen Sorption Kinetics in Mg-VCl3 Produced by Cryogenic Ball
Hydrogen storage in Mg/MgH 2 materials is still an active research topic. In this work, a mixture of Mg-15wt.% VCl 3 was produced by cryogenic ball milling and tested for hydrogen storage. Short milling time (1 h), liquid N 2 cooling, and the use of VCl 3 as an additive produced micro-flaked particles approximately 2.5–5.0 µm thick. The Mg …
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Hydrogen storage properties of MgH2/SWNT composite prepared by ball milling
Magnesium hydride was prepared by reaction ball milling, i.e. mechanically milling magnesium (purity >99.9%, 300 mesh) under hydrogen atmosphere with an initial pressure of ∼1 MPa, followed by a long-period hydrogenation at 300 °C. The process was repeated for three times to achieve a hydrogenation ratio of ∼80%, which was …
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Sorption properties of nanostructured ball-milled porous …
The ball-milling jars were configured to rotate at 1100 rpm, while the sun speed, at which the jars are connected and balanced, was adjusted to 220 rpm. The hydrogen storage properties of HGPS were analyzed using Sievert's type apparatus using a Pressure Composition Isotherm instrument (PCI, Suzuki Shokan Co., Ltd.) [34].
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Breakthrough in gas separation and storage could fast-track …
The remarkably high gas storage capability is due to the novel way gas molecules stick to the powder during the ball milling process, which does not break the gas molecules.
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Novel mechanochemical breakthrough for hydrogen storage
Researchers at Deakin's Institute for Frontier Materials have discovered a new method, "ball milling," to store gas in a special nanomaterial at room temperature.
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Effect of ball-milling duration and dehydrogenation on the …
Effect of ball-milling duration and dehydrogenation on the morphology, microstructure and catalyst dispersion in Ni-catalyzed MgH 2 hydrogen storage materials. / House, Stephen D.; Vajo, John J.; Ren, Chai et al. In: Acta Materialia, Vol. 86, 03.2015, p. 55-68. Research output: Contribution to journal › Article › peer-review
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Hydrogen storage property improvement of ball-milled …
In this paper, Mg 2.3 Y 0.1 Ni + x wt.% graphene (x = 1, 3, 5, 7) composite hydrogen storage alloys were fabricated by mechanical ball milling of Mg 2.3 Y 0.1 Ni alloy powder and graphene. The experimental results show that the phases of the composite alloy consist mainly of Mg 2 Ni, Mg, MgNi 2 and Ni 3 Y phases, and graphene tends to be distributed …
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Mechanochemical breakthrough unlocks cheap, safe, powdered hydrogen
"The ball-milling gas adsorption process is estimated to consume 76.8 KJ/s to separate 1,000 liters (220 gal) of olefin/paraffin mixture, which is two orders less than that of the cryogenic ...
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Empowering hydrogen storage performance of MgH2 by …
Although ball milling is a convenient method and can improve the hydrogen storage performance of MgH 2 to a certain extent via formation of small grain size, crystal defects, and unstable γ-MgH 2 phase, particle sizes around 300 nm seem to be the down limit that ball milling can reach because agglomeration and cold-welding process are …
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Hydrogen storage properties of MgH2–Tm: Ni-catalysis vs. mechanical milling
By applying short milling intervals, MgH 2 –Ni system has shown adequate behavior as a medium for hydrogen storage. The SEM-EDS measurements confirmed uniform distribution of Ni particles in MgH 2 powder for milling interval of 45 min, but morphological and microstructural properties of MgH 2 –Ni system are not significantly …
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Ball Milling Innovations Advance Mg-Based Hydrogen …
At present, ball milling has been widely used to synthesize MgH 2 with improved hydrogen storage properties. Ball milling under a hydrogen atmosphere has …
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Room temperature hydrogen absorption by Mg and Mg
For example, the activated nanocomposite produced by ball milling with addition of wet-milled TiFe reached the hydrogen storage capacity of 3.94 wt %, after absorption for 15 h at RT. It is clear that the refinement of TiFe and its homogeneous distribution in the matrix of Mg were essential for improving properties of hydrogen …
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Effect of ball milling nanocrystallization on hydrogen storage
The alloy with 10 h of ball milling has the best overall hydrogen storage performance. Under the conditions of 553 K and 3.5 MPa, the 4.499 wt % H 2 can be …
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Using Ball Milling for Modification of the …
The present paper reviews recent progress in improving the hydrogen storage properties by element substitution and additives. Ball milling is the promising technology for preparing magnesium-based hydrogen …
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Using Ball Milling for Modification of the Hydrogenation
Through the calculation of materials based on atomic scale (computer design of materials), selecting the appropriate alloy composition and ball milling parameters (ball milling time, ball-to-powder weight ratio, Ball mill speed, etc.) will be an effective way to realize large-scale practical use of magnesium-based hydrogen storage materials; (2 ...
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Magnesium–carbon hydrogen storage hybrid materials …
Time-resolved studies uncovered kinetics and mechanism of Mg–hydrogen interactions during High energy reactive ball milling in hydrogen (HRBM) in presence of various types of carbon, including graphite (G), activated carbon (AC), multi-wall carbon nanotubes (MWCNT), expandable (EG) and thermally-expanded (TEG) graphite.
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Nanoscale Mg–B via Surfactant Ball Milling of MgB2: …
Metal borides have attracted the attention of researchers due to their useful physical properties and unique ability to form high hydrogen-capacity metal borohydrides. We demonstrate improved hydrogen storage properties of a nanoscale Mg–B material made by surfactant ball milling MgB2 in a mixture of heptane, oleic acid, and oleylamine. …
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Electrochemical hydrogen storage properties of ball …
As shown in the later session, the SSA and micropore volume will decrease with the introduction of excessive defects by long time ball milling, which also lower the hydrogen storage capacity. The decrease of hydrogen storage capacity of the sample ball-milled for 18 h may be ascribed to these reasons. Download : Download full-size …
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Ball Milling Innovations Advance Mg-Based Hydrogen …
Ball milling has emerged as a versatile and effective technique to synthesize and modify nanostructured Mg-based hydrides with enhanced hydrogen …
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Enhanced hydrogen storage and superior capacitive performances of ball
In the present work, the effect of ball milling in the hydrogen storage performance of PMMA/h-BN core–shell nanocomposite (BPBNC) was investigated. The incorporation of h-BN into BPMMA matrix alters the amorphous to polycrystalline (BPBNC) which in turn enhances the crystalline size (22.3 nm), ...