Hydrolysis of Mg-based alloys and their hydrides for efficient hydrogen generation

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

“…Hydrogen is identified as a green energy with high energy density, cleanness, and abundant source, which is considered as one of the most potential alternative to traditional fossil fuels. [1][2][3] Efficient hydrogen production is the premise of realizing hydrogen energy economy. In recent years, researchers have carried out a variety of strategies for producing hydrogen, mainly including biological fermentative, 4 water electrolysis 5 and hydrolysis.…”

“…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.…”

Plasmonic Hydrogen Sensors

“…Another promising metal is Mg, which has long been recognized as a very promising material for hydrogen storage, [103,104] and has shown a larger change of refractive index than that of Pd (Figure 4) during hydrogenation. In addition, Mg is quite cheap (≈ 0.3$ g −1 ), which is very attractive for PHS development.…”

Hydrogen production from hydrolysis of magnesium wastes reprocessed by mechanical milling under air

“…Among the light metals, Mg and its hydride MgH2 stand out for hydrogen generation due to their high capacity (8.2 and 15.2 wt%, without taking into account the mass of water, respectively), their mild reaction conditions (room temperature and atmospheric pressure), the purity of the H2 obtained, and the environmental safety of the Mg(OH)2 obtained as a byproduct of the reaction [Liu 2021]. Another advantage of Mg is its increasing use in different applications [Prasad 2021] and the consequent availability of Mg wastes.…”