Hydrogen storage performance in palladium-doped graphene/carbon composites

摘要: Abstract In this study a two-dimensional graphene sheet (GS) doped with palladium (Pd) nanoparticles was physically mixed superactivated carbon (AC) receptor and used as hydrogen adsorbent. The adsorption/desorption isotherm of the Pd-doped GS catalyst/AC composite (Pd-GS/AC) is determined using static volumetric measurement at room temperature (RT) pressure up to 8 MPa. experiments show that H 2 uptake capacity 0.82wt.% for Pd-GS/AC obviously enhanced, measuring 49% more than 0.55wt.% Pd-free GS/AC RT Highly reversible behavior also observed. Moreover, isosteric heat adsorption (−14 −10 kJ/mol) higher pristine AC (−8 kJ/mol). An increase in suggests occurrence relatively strong interaction between spilt-over sites due spillover effect.