Comparative study of the formation-decomposition mechanisms and kinetics in LaNi5 and magnesium reversible hydrides

Kinetic characteristics of sodium borohydride formation when sodium meta-borate reacts with magnesium and hydrogen

“…It is most likely that these transition metals facilitated hydrogen dissociation, which is believed as a necessary step for the synthesis reaction [4]. It is known that MgO formed on Mg particle surface is a barrier for hydrogen dissociation [10]. …”

Effect of Nb2O5 on MgH2 properties during mechanical milling

“…Magnesium has the advantage of being a lowcost metal with a high storage capacity for hydrogen (7.6 wt%). Unfortunately, the absorption and desorption of hydrogen (Hsorption) in magnesium is slow and requires temperatures and pressures too high for application [1][2][3][4].…”

Decomposition of Magnesium Hydride Fiber Observed Using TEM and <I>In-Situ</I> AFM

“…The fringes are therefore considered as rotation moiré patterns created by overlaying the grains. Assuming that the grains are Mg, the rotation angle is derived as [1][2][3][4] . The selected area electron diffraction pattern (SAEDP) was obtained from the area within a 100 nm radius (Fig.…”

“…1) Mg is almost unable to complete hydrogen absorption, and thus MgH 2 grains generally contain an unreacted Mg core. 2) In order to improve its hydrogen absorption kinetics, previous studies have applied additives and performed nanostructure fabrication. [3][4][5][6][7][8][9][10][11][12] Although these material design techniques have enabled certain improvements, hydrogen capacity inevitably decreases because of the added substances and the increase of the oxidized surface area.…”