Metallic glassy Ti₂Ni grain-growth inhibitor powder for enhancing the hydrogenation/dehydrogenation kinetics of MgH₂

Abstract

Metallic glassy alloy is considered as one of the best option used to enhance the kinetics behavior of MgH2.

Effect of LaNi3 Amorphous Alloy Nanopowders on the Performance and Hydrogen Storage Properties of MgH2

“…The Ea value of this system is closed to previously reported value of MgH2 powders doped with 10 wt% Fe nanoparticles (86 kJ/mol) 38 , 4 wt% Ni nanofibers (81 kJ/mol) 39 , 10 wt% Cu nanoparticles (76 kJ/mol) 40 , MgH2/5 wt% metallic glassy Zr70Ni20Pd10 (51 kJ/mol) 35 and 20 wt% Ti0.4Cr0.15Mn0.15 V0.3 (71 kJ/mol) 41 systems. However, it is significantly better than MgH2/10 wt% metallic glassy Ti2Ni (87.3 kJ/mol) 37 , MgH2/5 wt% TiMn2 (117 kJ/mol) 42 , and MgH2/5.3 wt% TiC (97.74 kJ/mol) 42 systems. Contrary to this, Ea of the present system is above those reported values for, MgH2/14 wt% TiAl (65 kJ/mol) 43 and MgH2/5 wt% quasicrystal-AlCuFe (64.25 kJ/mol) 40 systems.…”

Mechanically-Induced Catalyzation of MgH2 Powders with Zr2Ni-Ball Milling Media

“…Severe plastic deformation (SPD) technique [15], including high energy ball milling [16], cold rolling (CRing) [17,18], high pressure torsion (HPT) [19] and equal channel angular pressing (ECAP) [20] were employed to improve the hydrogen storage properties of MgH 2 . Apart from the mechanical treatment approach, catalyzation MgH 2 powders with proper volume fractions of catalytic agents [21], including pure metals [22], intermetallic compounds [23][24][25][26], metal-oxides [27,28], metal/metal oxide composites [5,29], -carbides [30,31], metallic glassy alloys [32][33][34] and chlorides [35] have shown outstanding effects on enhancing the hydrogen storage properties of MgH 2 and infer its apparent activation energy of decomposition [36]. More recently, self-assembled MgH 2 and metal borohydride nanoparticles on graphene technique has shown great enhancement of the behavior of the metal hydride phase [37][38][39].…”

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

“…The desorption behaviors of the powder and consolidated samples were characterized by a Shimadzu Thermal Analysis System/TA-60WS, Saitama-Japan, under a He (99.99 wt%) gas ow (75 ml min À1 ). The apparent activation energy (E a ) of the decomposition was obtained using an Arrhenius approach with different heating rates (5,10,20,30, and 40 C min À1 ).…”

“…Table S1 † summarizes the hydrogen storage properties of MgH 2 upon doping with selected metallic catalytic systems. [30][31][32][33][34][35] The present study has been conducted to investigate the possibility of improving the hydrogen storage behavior of nanocrystalline MgH 2 powders upon doping and reactive ball milling (RBM) with different molecular fractions (2.5, 5, and 10 wt%) of metallic glassy (MG) Zr 2 Ni nanopowders (used here for the rst time). More importantly, we have attempted to employ this new nanocomposite system for running an electric golf-cart, using a 1000 W proton-exchange membrane fuel cell (PEM-FC).…”