nanoparticles supported by disordered mesoporous carbon: Hydrogen storage performances and destabilization mechanisms

LiBH 4 nanoparticles supported by disordered mesoporous carbon CMK-3, denoted as nano- LiBH 4 / C mesoporous , were synthesized in the present work. Nano- LiBH 4 in this sample was destabilized significantly, resulting in more favorable latent heat of dehydrogenation ( 40 kJ / mol H 2 ) , large amount of dehydrogenation capacity (14 wt%) below 600 ∘ C and reversible capacity of 6.0 wt% H 2 at 350 ∘ C . It was revealed that such destabilization results from two kinds of mechanisms: nano-dispersion and reaction with mesoporous carbon. Both mechanisms exert synergistic effects on the dehydrogenation of nano- LiBH 4 and reverse hydrogenation.