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Hydrogen storage in carbon/Mg nanocomposites synthesized ...

Sep 01, 2007  We have proposed the application of nanocomposites obtained by high-energy ball milling of graphite and magnesium with organic additives (benzene, cyclohexene, cyclohexane or tetrahydrofuran) as promising candidates for hydrogen storage , , , , , , , . The use of the additives in the ball milling is crucial in determining the characteristics of ...

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Magnesium–carbon hydrogen storage hybrid materials ...

Jun 01, 2013  Magnesium–carbon hydrogen storage hybrid materials produced by reactive ball milling in hydrogen Author links open overlay panel M. Lototskyy a J.M. Sibanyoni a R.V. Denys b M. Williams a B.G. Pollet a V.A. Yartys b c

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Effect of ball milling and iron mixing on structural and ...

Jan 01, 2021  Further, uptake of molecular hydrogen in modified Mg is a prospect for efficient hydrogen storage. Hydrogen uptake capacity of Mg can be improved with loading of transition metals. In this work effect of the ball-milling and different wt% of Fe on structural and morphological properties of Mg powder was conducted.

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Effect of ball-milling time and Pd addition on ...

May 01, 2020  Ball milling at different milling time can influence the electrochemical hydrogen storage performance of the Co2B alloy. Abstract The Co 2 B alloy is synthesized by high temperature solid phase process. 5 wt% Pd is added to the Co 2 B alloy by ball milling at different milling time in order to enhance discharge performance of the raw alloy.

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Hydrogen storage performance of TiFe after processing by ...

Apr 15, 2015  Abstract. Activation of TiFe for hydrogen storage by severe plastic deformation (SPD) through ball milling technique and the effect of microstructure on this activation have been investigated. TiFe becomes activated after the ball milling and is not deactivated after exposure to air, similar to TiFe activated by high-pressure torsion (HPT).

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Effects of ball-milling on the hydrogen sorption ...

Jul 08, 2009  Fig. 1 shows the PCI absorption curves (rehydrogenation) at 35 °C for an as-received and ball-milled (2, 20 and 100 h) LaNi 5 samples. PCIs of the ball-milled samples are quite different compared to the PCI of the as-received sample. Maximum hydrogen storage capacity of LaNi 5 seems to be gradually decreasing with increasing ball-milling time. There is also a noticeable increase in the ...

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Metals Free Full-Text Using Ball Milling for ...

Ball milling is the promising technology for preparing magnesium-based hydrogen storage materials. The research and development of approaches for modifying magnesium-based hydrogen storage materials prepared by ball milling is systematically expounded.

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Effect of ball milling time on the hydrogen storage ...

Effect of ball milling time on the hydrogen storage properties of TiF 3-doped LiAlH 4. Author links open overlay panel Shu-Sheng Liu a c Li-Xian Sun a Yao Zhang a Fen Xu b Jian Zhang a Hai-Liang Chu a Mei-Qiang Fan a Tao Zhang a Xiao-Yan Song d Jean Pierre Grolier e. Show more. Share. Cite.

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Ball-milled carbon and hydrogen storage Request PDF

Request PDF Ball-milled carbon and hydrogen storage We report the formation of carbon in different nanoparticle forms obtained by ball-milling of graphitic carbon. Ball-milling of graphite was ...

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Effect of milling duration on hydrogen storage ...

Jul 04, 2018  PCT curves and hydrogen storage energetics. PCT curves of the milled alloys at 613 K are illustrated in Fig. 3.It displays that the pressure of absorption and desorption plateaus visibly rises with the increase in milling time, which is ascribed to the internal strain stored during the ball milling [].Furthermore, the pressure plateaus of absorption/desorption exhibit an obvious tilt and a ...

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Effect of Molybdenum on Magnesium-Based Hydrogen

Abstract: Magnesium-based hydrogen-storage materials were prepared by reactive ball-milling under hydro-gen atmosphere with molybdenum as catalyst and coal-based carbon as dispersant. The microstructure, crys-talline phase structure and hydrogen-storage properties were analyzed using TEM, XRD, DSC, etc. The re-

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Enhanced hydrogen-storage properties of MgH2 by Fe–Ni ...

Oct 06, 2021  High dehydrogenation temperature and slow dehydrogenation kinetics impede the practical application of magnesium hydride (MgH 2) serving as a potential hydrogen storage medium.In this paper, Fe–Ni catalyst modified three-dimensional graphene was added to MgH 2 by ball milling to optimize the hydrogen storage performance, the impacts and mechanisms of which are

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Improved Hydrogen Storage Performance of MgH LiAlH ...

on the hydrogen storage properties of MgH 2−LiAlH 4, prepared by ball milling, are studied for the first time. The hydrogen storage properties and reaction mechanism are investigated by pressure−composition−temperature (PCT), differential scan-ning calorimetry (DSC), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS).

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Hydrogen release from LiAlH4/FeCl2 and LiBH4/FeCl2 ...

While ball-milling at room temperature is a popular technique for preparing hydrogen storage materials, the use of this method frequently resulted in hydrogen losses during milling. Cryogenic ball milling (or cryomilling) is a relatively poorly explored preparation technique suitable for producing temperature-sensitive materials.

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Hydrogen Storage Properties of Nanocrystalline Mg 2Ni ...

2Ni, nanocrystalline, mechanical alloying, ball-milling, hydrogen storage 1. Introduction Many metallic materials are known to form hydrides reversibly. Intermetallic Mg 2Ni with its high hydrogen capacity (up to 3.6 wt.%) is the prime candidates among hydrogen storage systems [1–5]. However, Mg 2Ni cannot

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Hydrogen storage properties of MgH2/SWNT composite ...

Aug 31, 2006  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 determined using ...

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Catalytic effect of niobium oxide on hydrogen storage ...

[en] We examined a catalytic effect of niobium oxide (Nb 2 O 5) on the hydrogen storage properties of MgH 2 prepared by mechanical ball milling method. The MgH 2 composite doped with 1 mol% Nb 2 O 5 by ball milling for 20 h desorbed hydrogen up to ∼6 mass% in the temperature range from 200 to 250 o C at the heating rate of 5 o C/min under a purified helium flow.

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Synthesis by High-Energy Ball Milling of MgH2-TiFe ...

The aim of this work is to investigate the influence of some processes variables on the microstructure and hydrogen absorption kinetics of MgH2 - X wt.% TiFe composites. Samples were synthesized by high-energy ball milling in a planetary (X = 40, 50, 60) and shaker mill (X = 40) under high-purity argon atmosphere. Commercial MgH2 instead of Mg powder was used in order to reduce adherence on ...

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Desorption behaviour of MgH2-Ni-SiC prepared by ball ...

Mar 01, 2019  Desorption behaviour of MgH 2-Ni-SiC prepared by ball milling for hydrogen storage material application. Z Jalil 1, A Rahwanto 1, A Akhyar 2 and E Handoko 3. Published 1 March 2019 • Published under licence by IOP Publishing Ltd

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The Effects Of Multi-component Alloying And Ball-milling ...

The Effects Of Multi-component Alloying And Ball-milling On The Microstructures And Hydrogen Storage Properties Of Ti-V-Fe Based Hydrogen Storage Alloys: Posted on:2007-06-23: Degree:Master: Type:Thesis: Country:China: Candidate:F P Zheng: Full Text:PDF: GTID:2121360182973013: Subject:Materials science: Abstract/Summary: PDF Full Text Request

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Ball-milled carbon and hydrogen storage Request PDF

Request PDF Ball-milled carbon and hydrogen storage We report the formation of carbon in different nanoparticle forms obtained by ball-milling of graphitic carbon. Ball-milling of graphite was ...

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Synthesis by High-Energy Ball Milling of MgH2-TiFe ...

Desorption temperature and kinetics Nano-nickel additives Hydrogen storage materials Composite hydrides MgH 2 and FeTi Ball milling a b s t r a c t Hydride-intermetallic composites MgH 2 þ X wt ...

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Effect of ball milling on the first hydrogenation of TiFe ...

Apr 11, 2018  In this paper, we report the microstructure and hydrogen storage properties of TiFe + 4 wt% (Zr + 2Mn) alloy before and after high-energy milling. The as-cast sample was made of a main TiFe phase with a Zr- and Mn-rich secondary phase. We found that ball milling can significantly reduce the crystallite size of TiFe + 4 wt% (Zr + 2Mn) alloy. First hydrogenation measurements showed that the ...

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Effects of Ni Content and Ball Milling Time on the ...

Zhen-Yang Li, Sheng-Li Li, Ze-Ming Yuan, Yang-Huan Zhang. Effects of Ni Content and Ball Milling Time on the Hydrogen Storage Thermodynamics and Kinetics Performances of La-Mg-Ni Ternary Alloys[J]. Acta Metallurgica Sinica (English Letters), 2019, 32(8): 961-971.

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Improved Hydrogen Storage Performance of MgH LiAlH ...

on the hydrogen storage properties of MgH 2−LiAlH 4, prepared by ball milling, are studied for the first time. The hydrogen storage properties and reaction mechanism are investigated by pressure−composition−temperature (PCT), differential scan-ning calorimetry (DSC), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS).

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Enhanced hydrogen-storage properties of MgH2 by Fe–Ni ...

Oct 06, 2021  High dehydrogenation temperature and slow dehydrogenation kinetics impede the practical application of magnesium hydride (MgH 2) serving as a potential hydrogen storage medium.In this paper, Fe–Ni catalyst modified three-dimensional graphene was added to MgH 2 by ball milling to optimize the hydrogen storage performance, the impacts and mechanisms of which are

Read More
Hydrogen release from LiAlH4/FeCl2 and LiBH4/FeCl2 ...

While ball-milling at room temperature is a popular technique for preparing hydrogen storage materials, the use of this method frequently resulted in hydrogen losses during milling. Cryogenic ball milling (or cryomilling) is a relatively poorly explored preparation technique suitable for producing temperature-sensitive materials.

Read More
Catalytic effect of niobium oxide on hydrogen storage ...

[en] We examined a catalytic effect of niobium oxide (Nb 2 O 5) on the hydrogen storage properties of MgH 2 prepared by mechanical ball milling method. The MgH 2 composite doped with 1 mol% Nb 2 O 5 by ball milling for 20 h desorbed hydrogen up to ∼6 mass% in the temperature range from 200 to 250 o C at the heating rate of 5 o C/min under a purified helium flow.

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Hydrogen Storage Properties of Nanocrystalline Mg 2Ni ...

2Ni, nanocrystalline, mechanical alloying, ball-milling, hydrogen storage 1. Introduction Many metallic materials are known to form hydrides reversibly. Intermetallic Mg 2Ni with its high hydrogen capacity (up to 3.6 wt.%) is the prime candidates among hydrogen storage systems [1–5]. However, Mg 2Ni cannot

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The Reserch On Hydrogen Storage Properties Of Magnesium ...

The Reserch On Hydrogen Storage Properties Of Magnesium-based Alloys Prepared By Mechanically Ball-milling: Posted on:2011-06-03 Degree:Master Type:Thesis Country:China Candidate:C Feng Full Text:PDF GTID:2121360305990533 Subject:Materials Processing Engineering Abstract/Summary:

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Ball Milling Research Papers - Academia.edu

The hydrogen storage properties and microstructures of Ti-doped NaAlH4 complex hydrides prepared by hydrogenation of ball-milled NaH/Al mixture with xmol% Ti powder (x=0,4,6,10) were investigated. It is found that hydrogen as ball-milling atmosphere is better than argon. The reversible hydrogen storage properties improve with increasing Ti content.

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(PDF) Hydrogen storage properties of Mg x Fe (x: 2, 3 and ...

This work deals with the assessment of the thermo-kinetic properties of Mg-Fe based materials for hydrogen storage. Samples are prepared from Mg x Fe (x: 2, 3 and 15) elemental powder mixtures via low energy ball milling under hydrogen atmosphere at

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Combined hydrogen production and storage via reactive ball ...

A combined hydrogen production and storage process was developed in which hydrogen was trapped within a coal-based structure, chemically modified via reactive ball milling. Low-temperature hydrogen evolution via TGA with mass spectroscopy (TG-MS), coupled with unusual Raman spectra, suggested both trapped molecular hydrogen and low-temperature ...

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Improved hydrogen storage properties of LiBH4 confined ...

Jun 06, 2018  In order to enhance the hydrogen storage properties of LiBH 4, activated charcoal (AC) was used as the scaffold to confine LiBH 4 in this paper. Ball milling was used to prepare LiBH 4 /AC composites. Experimental results show that dehydrogenation properties of ball-milled LiBH 4 /AC (LiBH 4 /AC-BM) are greatly improved compared with that of pristine LiBH 4, ball-milled LiBH 4 (LiBH 4-BM)

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