Mass production of Mg2NiMg2Ni alloy bulk by isothermal evaporation casting process

Structural and electrochemical hydrogen storage properties of Mg2Ni-based alloys

“…Nonetheless, the high deterioration rate in alkaline electrolyte and the low practical electrochemical capacity limit the application of Mg 2 Ni alloy in Ni/MH battery systems. Various methods have been studied to improve the electrochemical performance of the Mg 2 Ni alloy, including refinements of bulk structure [18,19], elemental substitution [20][21][22], surface treatment [23][24][25], composite treatment [26][27][28] and novel preparation methods like isothermal evaporation casting process [29], cold rolling [30,31] and polyol reduction [32].…”

Effects of cyclic hydriding–dehydriding reactions of Mg2Ni alloy on the expansion deformation of a metal hydride storage vessel

“…Packing fraction (vol%) PCI machine and no agglomeration of alloy powders was observed [36]. Dehouche et al [12] observed that a compaction of alloy powders would enlarge the pressure hysteresis and increase the plateau slope in PCI curves.…”

“…The hydrogen storage alloy, Mg2Ni, used in the current study was provided by Hsu et al [36] in a form of ingot made by an innovative mass production technique. The hydriding/dehydriding PCI curves of the given Mg2Ni alloy at 255-350 • C have been comprehensively studied by Hsu et al [36].…”

“…The hydriding/dehydriding PCI curves of the given Mg2Ni alloy at 255-350 • C have been comprehensively studied by Hsu et al [36]. The hydrogen storage capacity of the given Mg2Ni alloy measured by a commercial Sieverts-type PCI machine could reach 3.58 wt% [36].…”

“…As shown in Table 2, for Mg 2 Ni powders with an initial size of 200 mesh, the largest hydrogen storage capacity is 3.23 wt% and 2.95 wt% for the 50-vol% and 70-vol% packing fraction, respectively. The densified, agglomerated stack of fine Mg 2 Ni powders formed at the bottom of the vessel is presumably the main reason why the hydrogen storage capacity in the given reaction vessel could not reach the expected hydrogen storage capacity, 3.58 wt% [36]. Note the value of 3.58 wt% was obtained by testing a little amount (2.4 g) of Mg 2 Ni alloy in a Sieverts-type Table 2 Maximum hydrogen storage capacity during cyclic hydriding/dehydriding processes in a reaction vessel with various combinations of packing fraction and initial particle size of Mg2Ni powders.…”