Request PDF | Ball-milled carbon and hydrogen storage | We report the formation of carbon in different nanoparticle forms obtained by ball-milling of …
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Keywords: hydrogen storage, ball milling, tetrahydrofuran, boron nitride, lithium amide, lithium hydride; s ä Hydrogen is a promising clean energy source. Hydrogen storage today remains one of the most significant issues hindering the development of a 'hydrogen energy economy' [1]. The Li-N-H system is
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Hydrogen-storage properties of Mg–Ag samples after ball milling. It is well known that magnesium-based materials that have been subjected to mechanical ball milling behave much differently from those in the equilibrium state [8,68,69]. For this reason, we decided to measure the hydrogenation kinetics of samples in both states (after milling ...
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In this paper, we applied ball milling technique to prepare amorphous and nanocrystalline CeMg 11 Ni + x wt.% Ni (x = 100, 200) alloys which gaseous and electrochemical hydrogen storage dynamics and structure characteristics were systematically studied. It is shown that increasing Ni proportion promotes the amorphization of alloys, meanwhile, it …
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Li–Mg–N–B–H/ZrCoH 3 composites were successfully synthesized by ball milling of the reactants under argon and hydrogen atmosphere, respectively. The composite synthesized by reactive ball milling (RBM) under hydrogen has the best hydrogen storage properties. It can desorb 3.71 wt% hydrogen in 60 min at 150 °C under pressure of 0.1 MPa, and the …
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The effects of Ni content and ball milling time on the hydrogen storage thermodynamics and kinetics performances of as-milled ({text{La}}_{5} {text{Mg}}_{95 - x} {text{Ni}}_{x} left( {x = 5,, 10,, 15} right)) ternary alloys have been investigated. The evolution of microstructure and phase of experimental alloys in the absorption/desorption process has …
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Keywords: hydrogen storage alloy, ball-milling, magnesium copper alloy, differential scanning calorimetry 1. Introduction Hydrogen is considered an energy carrier for the twenty-first century. For practical application of hydrogen energy system, storing and transporting hydrogen safely and effi-ciently is a big technical challenge. Reilly and ...
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Melt spinning (MS) and ball milling (BM) were employed to fabricate YMg11Ni alloy, and their structures and hydrogen storage performances were examined. The results reveal that the as-spun and as-milled alloys both exhibit the nanocrystalline and amorphous structure. The as-milled alloy shows a larger hydrogen absorption capacity as compared with …
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The prominent hydrogen storage performances are related to the reactions between MgH 2 and Fe 7 S 8. The newly formed MgS and Fe in the ball-milling process present a co-catalytic effect on the hydrogen storage performance of MgH 2.
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The hydrogen storage properties and microstructure of Ti-doped sodium aluminum hydride prepared by ball-milling Int J Hydrogen Energy, 32 ( 2007 ), pp. 2475 - 2479 Article Download PDF View Record in Scopus Google Scholar
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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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The milling was carried out at various milling speeds, namely 300, 660, and 900 rpm. Results suggested that the structure of the nanotubes is preserved with prolonged grinding of magnesium hydride and SWCNT in a ball mill for …
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3.4 Hydrogen Storage Thermodynamics and P-C-T Curves In order to inspect the influence of melt spinning and ball milling for the hydrogen absorption/desorption thermodynamics of YMg 11 Ni alloy, P-C-T curves of the alloys, respectively, recorded the information at different four temperatures of 593, 613, 633, and 653 K, as presented in Fig. 8.
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HVBM stands for High Velocity Ball Milling (hydrogen storage) Suggest new definition. This definition appears very rarely and is found in the following Acronym Finder categories: Science, medicine, engineering, etc. Page/Link. Page URL: HTML link:
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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). The hydrogenation capacity reaches 1.3-1.5 …
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Hydrogen storage and microstructure of ball milled Mg 3 La alloy were investigated by X-ray diffraction and pressure-composition-isotherm measurement. The ball milled Mg 3 La alloy could absorb hydrogen up to 4wt.% at 300 °C for the first time, along with a decomposing course. Following tests showed that the average reversible hydrogen storage capacity was 2.7wt.%.
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Mn-based borohydride synthesized by ball-milling KBH4 and MnCl2 for hydrogen storage. February 2014; International Journal of Hydrogen Energy 39(5) …
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11 CANADIAN METALLURGICAL QUARTERLY, VOL 48, NO 1 NANOMATERIALS FOR HYDROGEN STORAGE PRODUCED BY BALL MILLING R.A. VARIN1,T. CZUJKO1,3, Z.S. WRONSKI,1,2 and Z. ZARANSKI3 1Department of Mechanical ...
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Li–N–H system is one of the promising candidates for hydrogen storage.However, with the heat treatment, LiNH 2 can release not only H 2 but N 2 and NH 3.To improve the purity and amount of H 2 in the products, LiNH 2 –Mg composite is prepared by ball milling. In the composite, Mg can absorb the gaseous byproducts, e.g. NH 3 and N 2, …
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for hydrogen storage alloys, ball milling is a promising method for changing the morphology and crystal microstructure. For instance, Zaluski et al. reported that mechanical grinding is very effective for improving hydrogenation kinetics for Mg-based alloys.[16] Herein, in order to improve the overall properties of La-Mg-Ni-Co-
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ball hydrogen hydrogen storage composite milling Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active Application number CN201610265793.9A Other languages Chinese (zh) Other ...
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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 …
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Green hydrogen was produced by the hydrolysis reaction of a "standard" AZ91 alloy (called AZ91 in the following) in "model" seawater solution. Two milling speeds (i.e. 250 rpm and 350 rpm) were tested to enhance the reactivity of AZ91. Graphite and AlCl 3 were used as ball milling additives. Milling at higher
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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. It is concluded that ball milling can significantly improve the kinetic and …
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Emami H, Edalati K, Matsuda J, Akiba E, Horita Z (2015) Hydrogen storage performance of TiFe after processing by ball milling. Acta Mater 88:190–195. CAS Article Google Scholar 15. Jain P, Gosselin C, Huot J (2015) Effect of Zr, Ni and Zr 7 Ni 10 alloy on hydrogen storage characteristics of TiFe alloy. Int J Hydrog Energy 40:16921–16927
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Effect of ball milling and cold rolling on hydrogen storage properties of nanocrystalline TiV1.6Mn0.4 alloy September 2009 Journal of Alloys and Compounds 484(1-2):154-158
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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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2 Facile Ball-Milling Strategy for Constructing Covalently Connected Black Phosphorus–MoO 3–x Heterostructures for Enhanced Photocatalytic Hydrogen Evolution Miaomiao Hu Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric ...
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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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The hydrogen storage capacity of a material may be considerably improved by utilizing these transition earth oxides as reactors in a ball milling method to create MgH 2. The rate of hydrogen adsorption in Mg-based composites usually increases with milling time.
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A sample of MgH 2 and 10 wt% Co 2 NiO was prepared by the ball milling technique. The hydrogen storage properties and reaction mechanism of the sample were examined. The temperature-programmed desorption result shows that the addition of 10 wt% Co 2 NiO to MgH 2 exhibited a lower onset desorption temperature of 300 °C, which was decreased to 117 and 70 …
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Eight hours (= 28.8 ks) of ball milling transformed the Mg : Cu = 2 : 1 mixture into Mg2Cu single phase which reacts reversibly with hydrogen. The other is prepared by ball milling a …
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modifying magnesium-based hydrogen storage materials prepared by ball milling is systematically expounded. It is concluded that ball milling can significantly improve the kinetic and electrochemical
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Improved hydrogen storage properties of MgH 2 by ball milling with AlH 3: preparations, de/rehydriding properties, and reaction mechanisms Haizhen Liu, a Xinhua Wang,* a Yongan Liu, a Zhaohui Dong, b Guozhou Cao, a Shouquan Li a and Mi Yan * c
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Keywords: hydrogen storage, ball milling, nanocomposite, magnesium hydride, aluminum 1. Introduction Magnesium is a potential material for hydrogen storage due to its high storage capacity, low cost and weight. However, its slow kinetics and high thermodynamic stability of the hydride are barriers to practical applications. Many
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Eight hours (= 28.8 ks) of ball milling transformed the Mg : Cu = 2 : 1 mixture into Mg2Cu single phase which reacts reversibly with hydrogen. The other is prepared by ball milling a cast Mg2Cu alloy.
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