High hydrogen storage capacity of nanosized magnesium synthesized by high energy ball-milling

New FCC Mg–Zr and Mg–Zr–ti deuterides obtained by reactive milling

“…However, the high thermal stability and slow kinetics of its rutile-type structure significantly hinder its widespread use in commercial energy storage systems. Many factors such as a chemical composition [2][3][4] , addition of catalytic species [5][6][7][8][9][10] , processing technologies 5,[11][12][13][14] and microstructural parameters, particularly grain size 6,[15][16][17] , have an effect on the hydrogen storage capacity, kinetics and/or thermodynamics of Mg-based intermetallic compounds. Conventional crystalline alloys often suffer from relatively slow hydrogen sorption kinetics even at high temperatures, while nanocrystalline and amorphous materials exhibit much faster kinetics at lower temperatures, as their large number of interfaces, defects and grain boundaries, provide easy pathways for hydrogen diffusion [18][19][20][21] .…”

Effects of BaRuO3 addition on hydrogen desorption in MgH2

“…However, the equilibrium dehydrogenation temperature is high, around 570 K under 1 bar of H 2 and the ab/desorption kinetics is undesirably slow [1][2][3][4][5][6][7][8]. A number of techniques has been applied to improve the ab/desorption kinetics of MgH 2 , for example, ball-milling [9][10][11] with different additives e.g., transition metals (TM) [12][13][14] and transition metal oxides (TMO) [15][16][17][18][19][20].…”

Preparation of Si-carbon nanotube composite by decomposition of tetramethylsilane (TMS) and its hydrogen storage property

“…However, simple size effects cannot be explained by the increase in the hydrogen storage amount and some chemical interaction between carbon nanotube and Si seems to be reasonably expected. Imamura et al [20,21] also studied on the hydrogen adsorption on Mg and carbon composite, which is prepared by the milling method and reported that the hydrogen storage amount could be much improved by modification of Mg with carbon. They claimed that the interaction between carbon and Mg positively works for increasing the hydrogen adsorption capacity.…”