scholarly journals Effect of ZrC Nanopowders on Enhancing the Hydro/Dehydrogenation Kinetics of MgH2 Powders

Molecules ◽  
2021 ◽  
Vol 26 (16) ◽  
pp. 4962
Author(s):  
Mohamed Sherif El-Eskandarany ◽  
Naser Ali ◽  
Fahad Al-Ajmi ◽  
Mohammad Banyan
Keyword(s):  
Hydrogen Storage ◽  
Ball Milling ◽  
Fine Particles ◽  
High Energy ◽  
Green Energy ◽  
Grain Structure ◽  
Micro Milling ◽  
Dehydrogenation Kinetics ◽  
Energy Ball ◽  
Kinetics Of

Hydrogen has been receiving great attention as an energy carrier for potential green energy applications. Hydrogen storage is one of the most crucial factors controlling the hydrogen economy and its future applications. Amongst the several options of hydrogen storage, light metal hydrides, particularly nanocrystalline magnesium hydride (MgH2), possess attractive properties, making them desired hydrogen storage materials. The present study aimed to improve the hydrogen storage properties of MgH2 upon doping with different concentrations of zirconium carbide (ZrC) nanopowders. Both MgH2 and ZrC were prepared using reactive ball milling and high-energy ball milling techniques, respectively. The as-prepared MgH2 powder was doped with ZrC (2, 5, and 7 wt%) and then high-energy-ball-milled for 25 h. During the ball milling process, ZrC powders acted as micro-milling media to reduce the MgH2 particle size to a minimal value that could not be obtained without ZrC. The as-milled nanocomposite MgH2/ZrC powders consisted of fine particles (~0.25 μm) with a nanosized grain structure of less than 7 nm. Besides, the ZrC agent led to the lowering of the decomposition temperature of MgH2 to 287 °C and the reduction in its apparent activation energy of desorption to 69 kJ/mol. Moreover, the hydrogenation/dehydrogenation kinetics of the nanocomposite MgH2/ZrC system revealed a significant improvement, as indicated by the low temperature and short time required to achieve successful uptake and release processes. This system possessed a high capability to tackle a long continuous cycle lifetime (1400 h) at low temperatures (225 °C) without showing serious degradation in its storage capacity.

ChemInform Abstract: Magnetism of Fine Particles of Kondo Lattices, Obtained by High-Energy Ball-Milling

ChemInform ◽  
2011 ◽  
Vol 42 (32) ◽  
pp. no-no
Author(s):  
E. V. Sampathkumaran ◽  
K. Mukherjee ◽  
Kartik K. Iyer ◽  
Niharika Mohapatra ◽  
Sitikantha D. Das
Keyword(s):  
Ball Milling ◽  
Fine Particles ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Energy Ball

Investigation of the coercivity of FeSiO2 fine particles assembly prepared by high energy ball milling

1995 ◽  
Vol 95 (11) ◽  
pp. 771-773 ◽  
Author(s):  
Jifan Hu ◽  
Yizhong Wang ◽  
Kaiying Wang ◽  
Boping Hu ◽  
Fuming Yang ◽  
...  
Keyword(s):  
Ball Milling ◽  
Fine Particles ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Energy Ball

Improvement of the Spark-Plasma-Sintering Kinetics of ZrC by High-Energy Ball-Milling

2011 ◽  
Vol 95 (2) ◽  
pp. 453-456 ◽  
Author(s):  
Beatriz Núñez-González ◽  
Angel L. Ortiz ◽  
Fernando Guiberteau ◽  
Mats Nygren
Keyword(s):  
Ball Milling ◽  
Spark Plasma Sintering ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Sintering Kinetics ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Energy Ball ◽  
Kinetics Of

Microstructure characterization of nanocrystalline ZrSiO4synthesized by ball-milling and high-temperature annealing

2005 ◽  
Vol 38 (6) ◽  
pp. 951-957 ◽  
Author(s):  
S. K. Pradhan ◽  
M. Sinha
Keyword(s):  
Ball Milling ◽  
Rietveld Analysis ◽  
High Energy ◽  
Microstructure Characterization ◽  
Energy Ball ◽  
Kinetics Of ◽  
Zircon Particles ◽  
Colour Gradient ◽  
Zircon Phase

Microstructure characterization and phase transformation kinetics of a high-energy ball-milled and post-annealed stoichiometric (1:1 mol%)m-ZrO2and amorphous (a-) SiO2powder mixture have been investigated by Rietveld analysis of X-ray powder diffraction data. The experimental results reveal that the ball-milling of stoichiometric powder results in the formation ofc-ZrO2/t-PSZ phases only. The ZrSiO4phase was not found to form even after 30 h of milling. However, an almost stoichiometric ZrSiO4(commercially known as zircon) phase is found to form even when a sample that was ball-milled for 5 min was post-annealed at 1473 K for 1 h. It appears that the intermediatet-PSZ phase plays an important role in zircon phase formation. The content of ZrSiO4phase increases very sharply within 15 min of milling and remains almost unchanged after 30 h of ball-milling. It is also found that nanocrystalline zircon particles are almost free from lattice strain. Contamination by an α-Fe2O3phase from the milling media results in a colour gradient (white to reddish) in the nanocrystalline ZrSiO4phase.

scholarly journals Environmentally friendly nanocrystalline magnesium hydride decorated with metallic glassy-zirconium palladium nanopowders for fuel cell applications

RSC Advances ◽  
2019 ◽  
Vol 9 (48) ◽  
pp. 27987-27995 ◽  
Author(s):  
M. Sherif El-Eskandarany ◽  
Mohammad Banyan ◽  
Fahad Al-Ajmi
Keyword(s):  
Fuel Cell ◽  
Solid State ◽  
Hydrogen Storage ◽  
Ball Milling ◽  
Storage System ◽  
High Energy ◽  
Magnesium Hydride ◽  
Hydrogen Storage System ◽  
Energy Ball ◽  
Ball Milling Technique

A new solid-state hydrogen storage system of magnesium hydride (MgH2) doped with 5 wt% of metallic glassy (MG) zirconium palladium (Zr2Pd) nanopowder was fabricated using a high-energy ball milling technique.

Synthesis of solid-state NaBH4/Co-based catalyst composite for hydrogen storage through a high-energy ball-milling process

2010 ◽  
Vol 35 (9) ◽  
pp. 4027-4040 ◽  
Author(s):  
Cheng-Hong Liu ◽  
Yi-Chia Kuo ◽  
Bing-Hung Chen ◽  
Chan-Li Hsueh ◽  
Kuo-Jen Hwang ◽  
...  
Keyword(s):  
Solid State ◽  
Hydrogen Storage ◽  
Ball Milling ◽  
High Energy ◽  
Milling Process ◽  
High Energy Ball Milling ◽  
Ball Milling Process ◽  
Energy Ball

Hydriding Characterization of La2Mg17-Ni Composite Materials by Mechano-Synthesis

2013 ◽  
Vol 652-654 ◽  
pp. 98-101 ◽  
Author(s):  
Zhuo Cheng Liu ◽  
Hui Ping Ren ◽  
Yi Ming Li ◽  
Feng Hu ◽  
Zeng Wu Zhao ◽  
...  
Keyword(s):  
Composite Materials ◽  
Hydrogen Storage ◽  
Ball Milling ◽  
High Energy ◽  
X Ray Diffraction ◽  
Nanocrystalline Particle ◽  
Ni Powder ◽  
Energy Ball ◽  
Hydrogen Storage Performance

In order to improve the hydrogen storage performance of La2Mg17 alloy, with high energy ball-milling in argon atmosphere prepared La2Mg17-Ni composite materials, and mixed in a little NbF5. Through automatSubscript textic control Sieverts equipment tested hydrogen absorption kinetic characteristics of sample. X-ray diffraction (XRD) analyzed the microstructure of material after hydrogenated, and estimated the phase composition of hydrogenated powder material. The results showed that hydrogen storage properties of composite materials improved significantly because of the mechanical ball-milling approach, and the hydrogenated capabilities also increased dramatically with rising of temperature. Further explained the material hydriding property is largely ameliorate because of the Ni powder and NbF5 prompted amorphous or nanocrystalline particle formation, but temperature controlling the generation of new hydride phase is as well the reason of hydrogenated performance to advance.

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