Hydrogen Generation by the Hydrolysis of MgH2

Effect of LiH on the fast hydrolysis and hydrogen generation of MgH2 by ball milling

“…27 No characteristic diffraction peaks of LiH are observed, which may result from its low quantity and grain refinement during the ball milling. 21 The diffraction peaks of the 9MgH 2 -1LiH after hydrolysis are shown in the Fig. 2 (curve b), which indicates that the hydrolysis of MgH 2 is incomplete.…”

“…27 No characteristic diffraction peaks of LiH are observed, which may result from its low quantity and grain refinement during the ball milling. 21…”

“…3,7 However, as the hydrolysis reaction proceeds, the by-product Mg(OH) 2 is deposited on the surface of MgH 2 , preventing the diffusion of water molecules into the internal particles, resulting in the decline of kinetic performance and conversion rate. 2,16,21 Therefore, how to effectively remove the formation of the Mg(OH) 2 passivation layer surrounding the MgH 2 particles, so as to accelerate the reaction, and improve the conversion rate is the key to MgH 2 hydrolysis. In order to achieve the above objectives, various effective methods have been proposed, such as adding acid 18 or soluble salt 20,22 nanocrystallization 23 and ball milling with metal oxides 24 or metal hydrides.…”

MgMn4Ga18: a novel three-shell gallium cluster structure

“…Lithium-magnesium alloy castings are up to 30% lighter than castings from aluminium alloys and 50-70% lighter than castings from iron alloys (Shin & Carter, 2014;Haferkamp et al, 2000;Aghion & Bronfin, 2000;Pezda, 2009). New materials developed based on magnesium are promising candidates for potential hydrogen-storage materials (Herbst & Meyer, 2010;Pavlyuk et al, 2013;Verbovyts'kyi & Zavalii, 2016;Verbovytskyy et al, 2020Verbovytskyy et al, , 2021. For these materials, the ability to absorb hydrogen is much greater than for previously known modified phases based on LaNi 5 , LaNi 5-x Zn x (Giza et al, 2009a;Pavlyuk et al, 1997) and ZrNi 5-x Zn x (Giza et al, 2001(Giza et al, , 2009b.…”

Hydrogen generator integrated with fuel cell for portable energy supply

“…Furthermore, the FCs are safe, reliable, eco-friendly, do not emit any noise and provide vibration-free operation. Among the known methods of obtaining hydrogen for the FC supply, the hydrolysis of energy-storing [3] or energy-accumulating [4] substances (binary and complex metal hydrides (MgH 2 , NaBH 4 , LiBH 4 and others), light metals (Al, Mg) or their alloys) deserves special attention, as hydrogen can be generated directly at the place of its use, which allows the challenges associated with its production, storage and transportation to be bypassed [3][4][5][6].…”