Hydrogen sorption, kinetics, reversibility, and reaction mechanisms of MgH2-xLiBH4 doped with activated carbon nanofibers for reversible hydrogen storage based laboratory powder and tank scales

Destabilization of Boron-Based Compounds for Hydrogen Storage in the Solid-State: Recent Advances

“…The incorporation of additives to the 2LiBH 4 /MgH 2 composite has also been considered. For example, different carbon materials were suggested: activated carbon nanofibers, TiO 2 -doped MWCNT and carbonized starch [122][123][124][125]. All of these systems were able to decrease the onset dehydrogenation temperature and accelerate the dehydrogenation kinetics of the 2LiBH 4 /MgH 2 composite.…”

Effect of Carbonized 2-Methylnaphthalene on the Hydrogen Storage Performance of MgH2

“…The effect of nanocarbon materials in promoting the performance of Mg-based hydrogen storage materials has been proven by a range of studies. Thaweelap et al improved the dehydrogenation/hydrogenation kinetics and reversibility of MgH 2 via doping activated carbon nanofibers (ACNF), and they found that the hydrogenation capacity of Mg-5 wt % ACNF reached 4.5 wt % at 593 K under 5 MPa, while that of pure Mg was only 0.3 wt %. Liu et al first used novel 1D bamboo-shaped carbon nanotubes (BCNTs) as carriers for the self-assembly of MgH 2 and showed that the dehydrogenation temperature for MgH 2 decreased by 443 K after it was loaded on BCNTs, and it absorbed 3.56 wt % H 2 even at a low temperature of 373 K. Zhang et al grew MgH 2 nanoparticles in situ in various carbon materials by a simple solid-state method, and they found that the MgH 2 @CSC composite exhibited outstanding hydrogen storage properties among the MgH 2 @X composites (X = coconut shell charcoal (CSC)), including multiwalled carbon nanotubes (CNTs), graphite (G), and activated carbon (AC); the MgH 2 @CSC composite absorbed 5.0 wt % of H 2 under 2 MPa for 5 min at 523 K and desorbed 5.4 wt % of H 2 at 598 K within 120 min.…”