Hydrogen storage of the Mg–C composites

Structure of Mg–C nanocomposites produced by mechano-chemical synthesis

“…The Mg-C composites prepared by comilling Mg with AC exhibit a higher hydrogen capacity (∼5 wt.%) against Mg/G composites (∼1.8 wt.%). The hydrogen sorption process runs much faster in the Mg/AC powders [15]. This behavior may be caused due to the different dispersity of the composites (S BET = 136 m 2 /g and 35 m 2 /g for the Mg/AC and Mg/G, respectively).…”

“…It was ascertained in our previous study [15] that using the amorphous carbon powder, produced by an electrical discharge technique in the organic liquids, as an additive to magnesium through ball milling enhances its hydrogen sorption kinetics. The synthesized Mg/AC composites offer essential advantages over pure magnesium and composites produced by co-milling of magnesium and graphite.…”

Magnesium-Based Materials for Hydrogen Storage—A Scope Review

“…Among the many approaches applied to improve hydrogen sorption/desorption kinetics, BM with carbon additives has been widely examined. To date, magnesium-carbon composites have been synthesized by BM of Mg or MgH 2 with different carbon allotropes (graphite [ 146 , 147 , 148 , 149 , 150 , 151 , 152 ]; nanotubes [ 150 , 151 , 153 , 154 , 155 ]; nanowires, fullerenes and activated carbon [ 150 , 151 ]; amorphous carbon, black carbon and nanodiamonds [ 150 , 156 , 157 , 158 ]) and are suggested to be a solution for solid-state hydrogen storage problems. In the past few years, carbon materials have been proven to improve the thermodynamics and kinetics of hydrogen sorption in different hydride systems.…”

XPS and UPS Valence Band Studies of Nanocrystalline Ni-Ti Alloy Thin Films

“…Many investigations have been carried out to decrease the operation temperature and improve the kinetics through grain size control [4]. Traditional energetic ball milling and cold rolling result in improved hydrogen storage properties because they decrease the grain size, and introduce defects which provide rapid diffusion paths for hydrogen and reduce the diffusion distances [5].…”